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About this blog

A blog for updates on the road to Multistruder Kickstarter pledge fulfillment.

Entries in this blog

 

59th Week: 1/31/2017

Back into the full swing of school now 3d printing 3-4 times a week now. Still printing the spooler brackets. and only a few more left to go then i need to print the dimension control bracket.  finished assembling the electronic boards i am doing some construction at my parents place so that will cause me to be a little more disorganized Things are moving forward more quickly now that techshop has pushed back their close date and that date should be more stable now

Steven Mosbrucker

Steven Mosbrucker

 

37th Week: 8/30/2016

All second batch has shipped i have started to work on support on the first batch. if you have not received a email about a support ticket created for you or that you havent created a support ticket yet than please let me know about the damage on your unit. I have 6 more support tickets left to fulfill. please make sure to answer any questions i have asked on the support ticket and that i know about all the damage i am back in school so i will be back to part time i will build the units ordered outside kickstarter this weekend. International units will be done in a month or so and the modules will be developed after that. should have international units out in 2 months.

Steven Mosbrucker

Steven Mosbrucker

 

29th Week: 7/5/2016

First batch has been shipped out the only one needing to be shipped is mikes. There have been reports of critical damage to 3 out of 12 units. People that have critical damage to there unit I will be getting to you shortly to replace what is broken. There are also some people that have reported some chipping of the paint. please let me know the severity of the issue and I will see what I can to fix it. However everyone please be very careful with the paint as it scratches easily. eventually I want the units to be powder coated with pla colored in the Multistruder. I will be back home Thursday to continue work on the project. I'm going to start working on the next batch and working on reinforcing the flat rate shipping box. and finding suitable padding that will keep the contents as safe as possible from the stuff moving around the inside and protecting the box from the outside. While on vacation in Oregon I had the opportunity to meet up with some of the great guys at proto plant in Vancouver Washington. The makers of the Proto-Pasta brand. We spent some time shooting the shit talking about filament making and diy filament extruders. I brought back some important wisdom from the meeting. the number 1 thing being to DRY YOUR STOCK BEFORE EXTRUDING. I had a issue of the filament that was made being very brittle and not able to flex without breaking. This was because of the high content of moisture of .21% (should be .030%) and this moisture was found in a Ziploc pellet bag that I never even opened. and 2 being that the longer you have the plastic heated before extrusion the more brittle the plastic becomes. They had a similar setup to what I envisioned for the multistruder. except their setup is a lot longer run out to allow the filament to cool before getting to the sizing drums for a 1 1/2 foot per second extrusion rate (90 feet per minute 30 times the extrusion rate of the multistruder). They used drums with force sensor to size the filament and drums to pull the filament to size and spoolers that keep up with the pulling drums. assembly, electrical , and extrusion tips and tricks videos are posted on my youtube channel. The Green Engineers Youtube bellow you can check out some picture of stuff thought the week  

Steven Mosbrucker

Steven Mosbrucker

 

26th Week: 6/14/2016

Today marks the 26th week of kickstarter fulfillment. have all units built and have now checking them to make sure that all the electronics work.  i have received the analog thermocouple amps a day after last weeks post. they are working great however they dont really seem to be calibrated that great even with cold junction compensation. i will need to be able to remedy that or just add a offset in the interface were you calibrate it to your ambient room temp or icewater etc. i have done more filament making and it brings up other questions. I found 2 different ways of extruding one is when you get the temperature just right and the filament matches the size of the die and it makes LARGE circles as it extrudes and thus 95% of the filament is +- 0.10mm of the die size.  the second way is to oversize the die and heat the filament to the point where it stretches as it comes out. this will cause the filament to stretch to size and create SMALL circles as it coils on table/floor. however in practice this seems flawed as the filament is so hot that it sticks to the previous loop of filament bonding it together. while the previous method would cause the filament to be cooled enough to were it wouldn't bond to the previous loop. this extrusion type is also +- 0.10mm of desired size however the filament will try to return to the die size so you will see the filament more + than - your desired filament size. i will do one more week of testing and should be ready to drill and send out units by end of this fulfillment week. check out pictures bellow. also i have more videos to come of the multistruder extruding plastic i will be posting them on my youtube and embedding them at the beginning of this entry when i post them.

Steven Mosbrucker

Steven Mosbrucker

 

41st Week: 9/27/2016

about 80% done with all welding. had issue last weekend because i ran out of argon and co2 mix so couldnt finish welding about 80% done with 3d printing just need to do all the drilling then final welding and we are ready for paint. still designing all the expansion modules those will be done soon. also sent out a emails to all the people that i have support tickets for. that it would be best to send your electronics to me so i ca fix them and check that they work before i send them back. please look for those emails and respond. i also found out that i might have a issue with needing more heater bands so also need to sort that out.

Steven Mosbrucker

Steven Mosbrucker

 

35th Week: 8/16/2016

Everything is done and i have decided on how to handle the shipping for this week i have shipped one unit using the new corn starch packing pellets out to to south California ( coming to you Andrew i will get in touch with you soon). When that unit gets there without damage i am going to send one out further to South Carolina (to you Stan). If that one also arrives without damage i am going to send the rest of the batch I am going to start printing the replacement parts for the people that need new electronics kits or welded couplers. STILL 1 PERSON THAT HASN'T FINISHED SURVEY PLEASE DO SO also make sure that if you have any damage make sure that i know exactly what needs to be replaced and i will be picking up boxes to ship replacement parts soon. Development on the expansion modules will begin while i am sending out the replacement parts to domestic backers. also the after kick starter units will be sent out. i go back to school august 24th (1 week) i will be going back to part time to finish development and building of international backers units by the 24th of next month (hopefully) and hopefully i am done with the expansion modules to send them packing internationally.  also check out my new series on youtube and my website/blog for 3d printing research.  check out pictures below 

Steven Mosbrucker

Steven Mosbrucker

 

54th Week: 12/27/16

Motors, servos, HX711 and load cells have been ordered and on their way. Finishing putting together the electronics boards. as I just got the bolts for Arduino mega in. waiting on the load cells to finish design for the automatic spooler bracket then I will begin to print those on vacation right now so I will see what I can do remotely

Steven Mosbrucker

Steven Mosbrucker

 

33rd Week: 8/2/2016

about 90% done with the welding still about 80% done with printing as the techshop makerbot is having some issues need to find the funds to fund a large enough format printer of my own 90% done with the drilling painting is going to start this week i will have to probably make a order of temp sensors, power supplies and a few other things that i need. i will be printing the covers and plates for new electronics packages for the people whose electronics broke after the 7th unit in second then i will be printing the outside orders which there is like 3-4 still on time for 80% of units out by 2 weeks from now for second batch.  IMPORTANT: i notice that one of my 2nd batch backers hasn't responded to the survey please respond. thanks.

Steven Mosbrucker

Steven Mosbrucker

 

48th Week: 11/15/2016

100% of machining done 100% of painting done 95% of printing done Tuesday or Wednesday of last week i got the replacement heaterbands in. they are ready to go. today i just got the rest of my analog thermocouple amps. finalizing the designs for the modules as everyone is currently asking for the spooler module. (im pretty sure). i need to finalize all the electronics and sensors for the expansion modules and order those please get a hold of me people with support tickets thanks. check pictures bellow

Steven Mosbrucker

Steven Mosbrucker

 

31st Week: 7/19/2016

Finished cutting all steel needed. For next batch. drilled all necessary holes on 1/8 inch main plate released version of 1.1 of the MOS (Multistruder Operating System). check out details on my multistruder dev blog. new version is posted on my github. started writing the plans to make a multistruder yourself. you can check it out at link bellow. started posting to multistruder dev blog again and i am going to talk about when anything else is added to the multistruder there. check it out. stated a github to hold all my software (for now) as well as the 3d printed parts stl https://github.com/TheGreenEngineersCompany/MOS posted the survey for the second batch backers. 5 of 7 have responded please march backers check your survey and get that in asap. people that ordered units for domestic shipping will get there unit after i ship out this next batch of 7. they will be made at the same time just packed and shipped after i insure that all the domestic backers are shipped out. i have still not heard back from anyone that had a broken unit please get back to me so we can move forward to repairing your unit. I am talking to usps about insurance. whether or not that goes through i want to send you the parts that are broken. please watch the electronic and assembly video and tell me what you are missing and what is broken.  just shipped out mikes unit. so now all 13 from the first batch are shipped out. In mikes i put alot of padding in we will see how it fairs in shipping and adjust the packaging accordingly on future shipments. again i will be delayed by printing of the large plastics. eta on finishing all metal work end of july. and shipping out early august. website units will be shipped out early to mid august.   Packaging that i am experimenting with is the "spring pad" biodegradable/Compostable cardboard pad. you can see bellow. also the honey comb shaped "bubble wrap" replacement also biodegradable/compostable honey comb recycled paper. biodegradable/compostable and renewable packing tape. all from ecoenclose. i am also experimenting with lining the sides of the box with "cutting mats" cut to size in order to keep the sharp steel from going though the side of the box.

Steven Mosbrucker

Steven Mosbrucker

 

Early Bird Batch Shipped 6/30/2016

Multistruder kickstarter Early Bird Batch Shipped 6/30/2016. 12 units have been dropped off today at 3:30 at USPS and should be arriving at most locations 7/2/2016 and some at 7/3/2016. Any questions you have now or when your receive your shipment please contact me.  the 13th unit (unit number 1 also the unit you have seen in the extrusion tips video) it requires some more work but will be shipped at the start of next week either Tuesday or Wednesday. Sorry Mike Langford but your unit will be loaded with the the newest updated software that i develop over the weekend while i am on vacation in Oregon. if you have any questions Mike please get contact me. For people that are on the next batch 2 the survey will be out to you guys pretty soon and as of now i am working on batch number 2. Again thank you backers for your patience. extrusion tips video is on my youtube and assembly video is coming soon.

Steven Mosbrucker

Steven Mosbrucker

 

45th Week: 10/25/2016

95% done with metal work 95% done with 3d printing 95% done with painting 95% with designing expansion modules the last thing i have left in metal work is to machine the metal couples on lathe and mill then paint them the last thing i have left in the module design is to finalize and add a few things. then source and buy the motors and electronics. received my last order of power supplies just ordered replacement heater bands so i will be able to finally send out the last few domestic units. and have some backups for international still haven't got a broken unit to repair please the 4 people that i have tickets for please get a hold of me for additional instructions. survey for international shipments will be sent out this weekend. please make sure that if you have a change of address between the survey and when i ship please let me know.

Steven Mosbrucker

Steven Mosbrucker

 

Update: 8/28/2017

This week i have cut the augers down to appropriate profile. Also i have ordered and recieved the screws that i need to put together the units. Today i plan on tapping all the holes on the couplers for the motors. Hopefully soon finish the unit that someone requested early and get it out. and see how it fairs shipping overseas. Then i will adjust further shipments international accordingly.

Steven Mosbrucker

Steven Mosbrucker

 

25th Week: 6/7/2016

today is the start of the 25th week of fulfillment Just got in the Arduino Megas all 13 have been swapped out for the unos that have been currently built. all 13 are assembled and now just need to be wired. I am still waiting for the analog themocouple amplifiers. Ran the extruder again and this time got conflicting results to before. now i am getting the same size extrusion as the hole drilled (2.00mm) +- .10mm or so. This would would mean that the amount the filament expands and stretches is the same and leaves you with the same size filament as the hole that is drilled. Further experimentation is needed before i drill the holes. However from the last run i have got some gorgeous footage of the extruder going about 3 feet per minute (doing a 1 inch diameter loop in 5 seconds) with good 2.00mm filament. video should be posted down bellow then posted on youtube later. I unfortunately had a accident in the shop while cutting off the cutting edge of the feed augers to be a constant screw. I sustained a large cut on my index finger on my right hand (right handed). The auger was ripped out of my hand by the saw i was using and the end cut me as it was ripped out of my hand. I had to go to the ER and get 5 stitches. So took that day off and have been slowly getting back working and such since the incident saturday. As i was not really able to use my right hand which is my dominant hand. Sunday i showed The Multistruder project at the San Jose Tech Shop open house and got a lot of praise for the design by other members, faculty, and other attendees Waiting on the thermocouples to come in before final testing begins then the units can be dissembled and thrown into a box and shipped out. Then the other work begins on a youtube/documentation series on how to assemble them as well as best practices and hopefully weekly updates on the software ("MOS") as it right now is just a stable version with BASIC functionality. check out pics and extruder video bellow. and i will add a picture of my finger last if you are squeamish skip that one (no blood just the stitches).  

Steven Mosbrucker

Steven Mosbrucker

 

39th Week: 9/13/2016

Finally i have got my school under control and have added all of my classes on the last day to add yesterday. So now i finally will be back to full time on weekends Friday - Sunday got the 7th survey for second batch and am working on sending that one out I have checked out my stock of extra parts i made in last batch. i have the main mounting plates, motor mounts, and 1/4 inch back plates already made in last batch. So i am already more than half way done with international units from left over parts from last batch. I have also started to design the dimensional control unit and spooler. I now need more power supplies and to figure out the issue with the screens as it seems that the supplier no longer carries the ones that i sent out last 2 batches. should be done with all the steel and stuff for international by the end of the month and be done with most of the designing of the modules by the end of the month and have them made and ready to ship out my the end of october.

Steven Mosbrucker

Steven Mosbrucker

 

76th Week: 5/30/2017

Sorry for the radio silence  I am out of school and currently on vacation in hawaii till the 10th of this next month because i am out of school i am back on full time on the project i will be assembling the units first thing when i get out

Steven Mosbrucker

Steven Mosbrucker

 

58th Week: 1/24/2016

Techshop was able to push back there hard close date from 1/24/2017 today to 3/2/2017. on 3/2/2017 they will be closing for a week to move the equipment and then reopen as the construction should be finished they just need to move the equipment. Well that is the plan got my next roll of filament in and i am continuing to print out the spooler brackets. maybe 5 more left to print. they take a long time as they are 3.5 hours each. i am going to team up with a few people here at tech shop to get them printed faster. just a few more parts left to purchase and print and then we are ready to push out the units to international. i am starting school on the 26th (2 days from now) but i will be spending time after school at tech shop printing what needs to be finished printing and working at other projects aswell. thus i will be back to part time but i think i will be spending more time on it that i have when i am on break (full time) as i generally have to help family out with other projects and holidays etc.

Steven Mosbrucker

Steven Mosbrucker

 

42nd Week: 10/4/2016

About 90% printing done About 90% of steel work done only thing left is painting. 50% done designing the expansion modules survey for international backers to come out after painting units(about 1-2 weeks) Another Support request fulfilled. please get a hold of me to get information on how to send me your electronics for repair. Thanks.

Steven Mosbrucker

Steven Mosbrucker

 

Update: 1/23/18

Got everything working. in code and physically have been putting everything together in code. I have a few more things to bring into code. Hopefully this weekend i can add the modules to a pre build multistruder downstairs. The priority is the spooler and the dimensional control. The RPM sensor is last. I start school again tomorrow. I will only be taking 6-9 credits this semester. so only part time to almost full time.

Steven Mosbrucker

Steven Mosbrucker

 

24th Week: 5/31/2016

today marks the start of the 24th week of fulfillment. ran the new extruder for the first time. Learning how the extruder wants to be setup and as assumed when you are extruding the filament you want to SOFTEN the plastic not MELT it.Thus you are shaping it at its softening temperature by pushing it through a die. if you melt the plastic the diameter becomes almost impossible to control. However if you soften the filament will contour to the die hole as it comes out and will expand as it is really hot. It will also stretch a little but not considerably before it cools to a pliable state. While in the pliable and still soft state this is when the filament must be shaped to be put onto a spool or when it coils itself up on the floor. Knowing this now you will probably not need the fan that much as it will harden to quickly and hold the shape of a straight line before it has a chance to coil and hold the coil shape as it cools back down to room temperature. The die i was using was drilled to about 2 mm and i was getting 2.5-2.6 mm filament when softening and .75 to 1.25mm when i was melting the filament. so that is a .6mm size expansion when softening. i am going to continue to study how undersized i should go in order to get perfect 3.0mm filament and 1.75mm filament. I should have the desired drill sizes by the end of this week.  after going though quite a bit of practice plastic from the above dimensions the extrusion was mainly 85% -.125 average case (it really didnt expand past 2.6). this is pretty good for only using the extruder for 2 days. I now know that going with a 2 amp only power supply to a motor that can take 10 amps was a really good decision. The 2 amp to the motor causes it to stall ALOT of the time but it will only stall if one of these conditions are wrong 1. being you filled the hopper up to much 2. temp too low 3. temp too high. Bellow i put at story of what could happen if a larger power supply was used. In order to try high amp no control performance i put on a 10 amp power supply as it was stalling alot and condition number 3 of the temp being too high was present. What i could guess happened was 1 of 2 things either the heat spread up the pipe and melted the plastic to the auger and to the side wall of the pipe and this basically "gummed" the auger up to the pipe by melted plastic. 2. the molten plastic bellow was basically a liquid and as you push solid pellets in there is pressure buildup but no extrusion because it is a liquid and not a semi solid. the molten plastic would also insulate the pellets inside and the pressure built up as nothing was able to extrude. whichever of these 2 causes (im 80% positive it was the second) the motor over torqued to about 400kg.cm at 10 amps and stalled in 1 second of stalling it ripped the gear reduction train apart. tearing teeth on two gears off and bending others. And this is why the motor is allowed to stall at low power to prevent damage of electronics or motor. and if it stalls it is because something is wrong. Also i have the first stable beta version of the software ("MOS" Multistruder OS). It has all the basic basic features you need to start out. I haven't really gotten into using the true power of the micro controller YET. It has the features of: turning on and off extruder/heater, setting temperature and that is about it. I opened the expansion module bundle on my website store for The Dimensional Control and Spooler/Direct drive early adopter pre order. with this pre order you get both the dimensional control and the spooler OR the direct drive for $50 bucks %50 off the final retail price. these will ship after the international units ship. I HIGHLY RECOMMEND these modules as they will give your multistruder the best possible filament output. (this turns the multistruder into what i dub the FilaFactory). this price will go up to $100 after i ship the international backers multistruder. Also this week i am putting together the rest of the units as i am waiting for the new arduino megas to replace the unos to come in. So after i get the megas i will just need to bolt them in slap the screw terminal on and we are ready to go. I am also going to need to finish some printing. I am now done with school for the summer until like late august. so i am back to full time on the project. Make sure to check out the pre order expansion modules. Picture are bellow. I included some pictures of the blown motor and a perfect 1.75mm filament segment. the rest are 2.55 or so.

Steven Mosbrucker

Steven Mosbrucker

 

23rd Week: 5/24/2016

Today marks the 23rd week of fulfillment. Bay Area Maker Faire 2016 was last weekend so some news from the show. Assembled the first 3 units to show you a good idea of what a assembled unit looks like. First beta run of the code. One issue remaining with the electronics. the thermo couple amplifier does not want to read the thermo couple but it reads its local reference temperatures so it must be just a library issue. but everything else works flawlessly. Upgrade to Arduino Mega was successful after some tinkering of the libraries. The mega barley fits inside of the case as the mega is 4 inches in length and the case is 4 inches wide. This greatly increase the expand ability of the system. i will be upgrading all units to now be standard with a arduino mega. check out pictures bellow.

Steven Mosbrucker

Steven Mosbrucker

 

Seventh Week: 2/2/2016

this week starts the seventh week of fulfilment. I only have stuff that needs to be ordered after the Chinese holiday left. Those items are the Motor, Arduino, TFT, Stylus, ( and misc stuff). I now have enough components to layout the electronics mounting plate with all the components on them. A few more things have come in this week and i have also worked on more of the "MOS" System (Multistruder OS). I broke down each large part of the program into a individual h file for easy editing. Those files will be available soon on this site for downloading to your Arduino your Multistruder uses. You will also be able to find ubdates to the "MOS" system here aswell. Attached are pictures stuff that came in this week.  

Steven Mosbrucker

Steven Mosbrucker

 

Thirteenth Week: 3/15/2016

today marks the start of the 13th week of fulfillment. i sent out surveys for early bird backers requesting the nozzle diameter you want so make sure that you answer that survey if you are a early bird backer asap. I recently got some machined couplers in that are good to go i will get the rest in shortly. I also finished a prototype of the stand to get a idea of what it would look like after assembly. Those should be getting put together this weekend. I also plan on finishing the motor mounting plates this weekend as well. This week i started 3d printing the electronics housing plate. This is the final 3d printing part that is required to test the units. I should be finished printing all of them by mid next week. and should be starting on the printing the electronics cover that should take another 2 weeks. By the end of those 2 weeks everything should be getting buttoned up and ready to send out. That is depending if i decide to paint all the metal or not Check out the pictures bellow.

Steven Mosbrucker

Steven Mosbrucker

 

Fifteenth Week: 3/29/2016

Today starts the 15th week of kickstarter fulfillment. During this week i am on spring break so i will be working on this project 80% of the time. I assembled the metal for the stands earlier this week and now i will assemble the multistruders into the stands so i can adjust the motor mounts to make sure that the augers go straight though the pipe. Then i need to drill holes for the adapters so you can add another foot extension to the distance the multistruder is from the ground. Then i need to weld a "foot" onto that stand. For the electronics i need to get some 3M double back tape and a lot of wires i need to wire together the units. Then i will begin testing the units and coming up with a easy solution to paint the units that is environmentally friendly (low voc and water soluble) (hopefully). i ran out of hatchbox filament to make the electronics housing out of and just my luck amazon just temporary ran out of inventory so hopefully i find some hatchbox or some other filament soon so i can print this weekend. In the meantime i will be printing prototypes to check the fit of the cover tell it is right then by that time i should have the filament. check pictures below.

Steven Mosbrucker

Steven Mosbrucker

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