Blogs

Our community blogs

    • 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.
    • 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
  1. 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)

  2. 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.

     

  3. 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

  4. 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