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  1. Last week
  2. Are you back since 17 days now?
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  4. I have finally tried the cut on the shopbot with a 3/32 square endmill 3/8 LOC and 1 1/2 overall long story short i picked wrong parameters and broke the endmill in about 5 seconds. within a cut of half a inch. so we have a few options either i can keep trying to figure out the parameters while paying for 15 dollar endmills every mistake. and supposibly even if you get the parameters right these endmills only last for less than 1 shredder each. or i up the endmill size but that would cause larger radius which would mean loss of detail and material. all of these cause alot of problems So i think i have come to the decision to make the cnc plasma my production machine. Then i will just spend the time to get rid of the taper problems. Most of the taper problems are just the inner square for shaft. so maybe a broach or a router bit i sent another inquiry to the steel company for the sheet. setup delivery locally for pickup. However the sheet for delivery is quite a bit more than i originally thought. I will be doing some summer work helping out starting monday so i will be able to get the sheet soon.
  5. Back home from vacation Going to try something new for first shredder. Tech shop is going to allow me to use the 4'x8' shopbot to try to cut with i have a 3/32" 2 flute end mill We are going to see what kind of quality i can get out of the shop bot as calculators say i can do 35.4 ipm so it wont be too bad on time even though first time im going to do a conservative depth of cut per pass i think the quality is going to be quite a bit better than the plasma and also the radius of the corners will also not be that bad as it would be 3/64th radius. endmill coming tomorrow going to be getting steel during week try first shredder this weekend. generating g-code now for shopbot.
  6. Enjoy your vacation !
  7. 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
  8. Finished school monday. Back on full time Went to redwood city techshop again and cut the gears. The gears were the first cuts using fusion 360 cam aka hsm works they had a weird twist in the gear i found out that that was because the arc in the plasma actually bends twords where the ground is and the twist was twords the ground clamp. the cam gcode was not plug and play. i had to modify it to work on torchmate. So i am going to go into more detail on what torchmate didn't like and make sure that that gcode is not outputted. However. fusion 360 still does not have nesting capabilities So i will try to use vcarve pro to do the gcode as it has nesting capabilities. I also had the chance to do varying speed lines on the plasma I did this to check to see ideal speeds to minimize dross which minimizes post cleanup. i started with 19 lines each with dropping speeds of 5 ipm with each line i found that 7 (70 - 40 ipm) of those lines had the least dross. i then put those into a array of 7 lines spread apart and cut them again to better see the dross more clearly and picked the best one i believe 65 ipm i plan on going back to tech shop redwood city tomorrow to cut out a full shredder to gauge the post cleanup. And also time the post cleanup i will be trying to use vcarve pro to do the nesting for the 4x12 plates of a36 to do an entire shredder. I will then try to assemble and see how it goes. However, i will be going on vacation with my family on Friday for 2 weeks. so i will only be working on the gcode from there. so if the a36 goes well i will pick up the 1045 plate from supplier and start cutting. I will also try to get the hardening option up on my store if anyone is interested in that. check below for more pictures.
  9. Great news ! What is your tentative time to ship some of the units ?
  10. Have been swamped with school projects, tests, hw, and finals. so i will not have prototype by maker fiare also i might not even be able to attend or show at maker faire as i have a very critical final on the 22nd the day after maker faire i just got in the hall effect sensors and the rare earth magnets so i will need to implement that code into the program as well summer is coming up on 5/25/2017 then i will be be back to the green engineers stuff however i will need to take a summer class and might do a internship to get some money to get a small place to organize my stuff again thanks for your patience check bellow for pictures
  11. Cut some test pieces this weekend at tech shop redwood city They came out pretty good. except a few problems that will need to be adjusted I now need to come up with a better way of knocking off the dross/slag The software that generates the gcode at redwood city's torchmate is ancient and garbage I will need to figure out how to leverage fusion to get better cuts. and use vcarve pro 8.5 to do nesting into whatever size of plate i have next i will be working on modifying the fusion files to adapt what i learned from the test cuts next weekend i plan on cutting out an entire shredder in A36 for first steel prototype. check out bellow for all the pictures that i have taken from the cutting process. going to take some more close up shots of the parts i will add those when i take them
  12. Started to fall behind in school a little bit so had to devote some more time to it. So haven't devoted much time int o project but i am going back into now. going to have a new printer in less than 10 days. i am building a 18" x 18" x 18" build volume printer out of the car case of my old kossel. Maker faire is coming up in 2 weeks. i actually have a final that monday after maker fair and i is a difficult class so i am not sure i am going to be able to make it. I will do what i can to make it to the faire and hopefully have a mock up there of the multistruder most of the 3d prints are ready to go i need to print another roller and glue the bearings into the pulley and both of the dimensional control rollers then assemble one
  13. I have taken the cnc plasma cutter class at tech shop redwood city. The cuts it does are quick but pretty rough and will need finishing by hand filing and buffing. However, i learned that tech shop redwood city also has a small heat treating oven for knives that looks like it would be big enough for at least one shredder at a time to heat treat then temper. I will be doing some testing on that with a gear that i cut and some hardness testing files to see what type of hardness i can put out. So i will work on a price and make that available for you guys as well. When i am done testing. I am going to be in contact with my supplier to tell them that i am going to be purchasing a 1/4 inch 1045 about 4"x4" sheet Also i am going to head out there this weekend with some A36 and do some test cuts as that should be pretty similar to the 1045. Also i will try to harden a piece of A36 and it probably wont work. we are really close to getting a prototype cut and finalized to run into production and possibly some heat treating of a few if you guys desire. Check out pictures bellow.
  14. just put out a new review check it out. working on putting the pictures on it.
  15. Any news ?
  16. Got in 30 metal bearings. Have been finalizing all of the rotating 3d printed pieces to use these bearings been getting some gorgeous prints off of my personal kossel 3d printer at home if printing very slowly. have updated the pulley and the dimensional control rollers to use the bearings so far I have purchased the hall effect sensors and some rare earth magnets to monitor rpm to check speed and also enhance the auto extrude algorithm. Trying to get a prototype built to premiere at Maker Faire Bay Area this year. event is may 20th Bellow you will see my prints that are using the new metal bearings bellow check out pictures bellow
  17. CNC Plasma Cutter Redwood City appointment coming up soon About time to purchase the plate of 1045 steel I machined the jig for the A36 for cutting out of the tormach It was machined out of HDPE Starboard. It is a jig to mount 2 4" x 12" x 1/4" A36 Plate to be cut and held down in the tormach. so when i swap in the next pair of A36 plate in i dont have to rehome the tormach plate purchase coming up. Bearings as well, as well as drive square bar. Stay tuned First cuts coming very soon. Check out pictures below.
  18. Ordered the hall effect sensors and the magnets for rpm speed detection to better increase the percision of the automatic algorithm tech shop is back open going back to start printing the pieces after a final double check of the models. will also buy some more filament. Im going to try 3dxtech brand i think. bearings have not come in yet maker faire bay area is coming up and i will be a presenter there again this year. hopefully i will have the first one built and running before then. maker faire is in mid may alot more coming soon now that tech shop is back open. As my printer is just not reliable right now.
  19. check out newest updates in blog. i do about a update a week and forsure one updates every 2 weeks.
  20. Any news ?
  21. TechShop is still closed. They failed an inspection so new reopen date is 4/5/2017 (tomorrow) instead of 4/1/2017 Bearings for dimensional control rollers,pulley have been purchased. I am going to try to get those to work with the spooler A lot of models edited im getting closer As stated in last blog the beta version of the software is finished so waiting to install on first unit Most of the rest of the printing will be completed at TechShop on the replicator 2 because as of right now it is more reliable than my printer at home. Now i am trying to source some rubber or cork to rap around the piece that drives the spool on the spooler module. I am also going to source some hall effect sensor. More pictures when i finalize more of the models and begin printing. or when i get in some of the stuff i purchased.
  22. TechShop is still closed. They failed one of their inspections so the re-open date has been pushed back to 4/5/2017 instead of 4/1/2017 I have signed up for the cnc plasma class. issue is that the closest class i was able to sign up for is 4/28/2017 I have been calling in for every class from now to 4/28/2017 if a seat come available that i could fill in between now and then. When TechShop San Jose reopens i will be moving forward with the template for the A36 shredders to be able to mill out. even though that process will take like 6-7 hours to make 1 shredder In the mean time i have been looking to buy some heavy duty flange bearings so i can adapt my model to accommodate them. Then buy the square drive shafts for machining. Or source hexagon shafts
  23. On spring break. back to school on Monday redesigned a lot of the 3d models and printed alot of prototypes tech shop san jose is closed down for move to 2x bigger location re opening on april 1st some models will need to be printed at techshop over night because of long print times software beta finished and ready to be installed decided to buy metal ball bearings from china so those are on the way and redesigning the models to accommodate those new bearings. now i need to buy some metal springs and thrust bearings and i think we are good to go. check out pictures bellow.
  24. No Problem.
  25. Techshop San Jose is now closed for move to the new twice as large location I was preparing to machine a template for machining the 4" x 12" inch A36 plates. However something new came up Tech Shop Mid Peninsula in Redwood City just got the permits for their cnc plasma cutter to be used again This is a great development. This will decrease the time for cutting the shredder by about 11 times. which drastically increases my speed for production However one thing that I will have to deal with is the quality of cut. the quality of cut is not going to be as good as a water jet or the mill. As technically the plasma cnc cutter is the worst quality of cut all cnc machines. as plasma cnc machines are built for speed not quality of cut. The plasma cnc machine will leave dross. and more taper than the other cnc machines. so I'm predicting a lot more cleanup than the mill. qThe Bad is that the class to learn the machine is full until the 20th of next month. I am working to getting into a class or checked off on the machine asap. So I will be just buying the 1045 steel 4' x 8' x .25" plate (does 8.5 shredders). and start cutting. if everything checks out we are ready to rock and roll Again thanks for your guys patience. it is coming check out pictures bellow for some pictures of example cuts from the cnc plasma cutter.
  26. I will be finished with last part of code for beta today. Now Just double checking the 3d cad models and start printing them at home. I am now on spring break tell 4/3/2017 TechShop San Jose is now closed for move to twice as big facility. they will be back up in about 10 days back in new facility. We are still moving ahead. even more progress to happen while on spring break.
  27. Printed a whole bunch more of the dimensional control brackets Started to work on the code. i will do more this friday try to finalize a beta asap Need to source some springs for the dimensional control brackets only small pieces remain to be printed. I will be without tech shop from march 23rd for about 10 days. (As of this writing) pretty much all electronics have been ordered just printing remaining and coding remain Check out pictures bellow of the dimensional control brackets and the extension wires that have arrived
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