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  1. Steven Mosbrucker
    Latest Entry

    i have been messing around with adding the code for a more dynamic temperature control to bring down the hysteresis to 1 degree up and down. to allow for a very higher precision of control. unfortunately i cannot really test it out because i don't have a unit to test anymore. I have one left over in the garage that i will put together until then i will just be working on the code side. v1.1.1 is just me working on it. v1.2 will contain those changes.

     

    • Been working from home
    • Got my printer to work again and it is doing some perfect  prints
    • Unfortunately it prints really slow (40mm/s)
    • So far i have finalized the drive cone it slips on motor perfectly
    • This week i hope on finalizing the servo rack and pinon
    • Then i start working on software
    • then assembly
    • I did check out a few locations to move the shop to but nothing has panned out yet. All i need to finish this project i currently have available to me. Other projects not so much.
    • Finally situated back at home
    • Had some interesting doors open for me this week
    • Today i am dropping off some material to "central shop" here at sjsu to have them try to cut a shredder dial on their brand new multiaxis (tilt) water jet
    • i am going to inspect the shredder dial that is cut and check the taper and tolerance on it if it is good i am going to have them cut out an entire shredder.
    • However this "help" from central shop is kind of under the guise of a school project for my club for a competition. I made this project as a club project to get more help with it's development
    • So i am not sure that if the cut is good if i will be able to get them to do like a 8 shredder production run.
    • However i might be able to have them make a push broach to file the old plasma cut ones at school on their arbor press. I will begin adding one for them to make.
    • i will post some pictures of the output of the waterjet and i will also talk to the main guy at central shop and see whats going on.
    • This week i also checked out a new location to possibly host a plasma cutter that i designed and might build. But that location might not work out.
  2. like i said in my first post the idea is to build a entire 3D printer frame off of the 3 700mm 27" uprights all the extrusion motors and all the other brackets and such (i will have to get another extrusion motor for the x carriage). So the main idea is to use as few additional parts that i have to buy and print as possible.

    Look at the drawing attached for a better idea of what im going to do. i know it is messy as i have rewrote the plans a few times.

     

    IMG_20160131_135855119.jpg

  3. For the final test of moisture's effect on 3d printed surface finish. i will be testing a varying amount of moisture content PLA to get an array of filament quality to compare

    Experiment:

    • cut 5 coils of Octave PLA at around 25 feet ~20 grams each
    • water log all 5 coils for 1 week in water
    • Print the 5 coils in this order
    1. 1st waterlogged coil
    2. 1 hour dried coil
    3. 2 hour dried coil
    4. 3 hour dried coil
    5. 4 hour dried coil
    6. room environment off spool

    Hopefully this final experiment gives us the final answer we have been looking for.

    waterlogged filament will be starting today and will be ready fri(16)-sun(18)

  4. ok i have taken everything apart (removed everything from the frame). I can now get a better look of what i have to work with. I have

    • 2 ~11.25 inch chromed rods
    • 4 8 inch chromed rods
    • 1 9 inch lead screw with brass nut
    • 6 LM8UU linear bearings
    • 4 NEMA 17 motors
    • various bearings for belts
    • 2 NEMA 17 pullies 
    • 2 GT2 belts
    • 1 hobbed pully
    • 1 100 watt power supply
    • 1 printr board

    that's about all the useful things i have from the carcass

    check pics below

    • Techshop went bankrupt 6:00AM yesterday 11/15/17
    • Because of this i no longer have a shop to build things. and my office for storage at the shop is gone
    • I now have everything in boxes looking for another opertunity
    • Delays on projects to be expected.
    • Link to TechShop Website Note About Closure In PDF Form
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