Saturday, April 10, 2010


well today i found a putty at work that says it is good too 350F so i think it should work, that is higher than the jb weld that i found at work

this stuff is maid by permatex and it is called pit crews's choice some of out costumers say it works really well so i thought it would be worth a try.

but i think this will work for what i need, though i really should get my but in gear and start building more of the controllers that i will need, next week i will order the stepper drivers that i need, when all my funds get to where they need to be.

i am still debating on how to control my extruder, off my arduino mega or from its own arduino i can see benefits to doing it both ways.

i think i am just going to use a drilled out bolt for the rest of my extruder barrel


  1. What material do you plan to extrude? 350 F is pretty low for most of the materials that you might extrude.

  2. I use "fahrenheit 500" putty. It's awesome, and I've never had one degrade or anything.

    I buy it locally, but here's a link so you can see what I'm talking about:

  3. 230 degrees Celsius = 446 degrees Fahrenheit for ABS
    170 degrees Celsius = 338 degrees Fahrenheit for PLA

    You better be using PLA, or else that putty will not work. Personally, I would only use something rated for 500F just so I have some flexibility in the materials I use.

  4. I like it! You should go with the Arduino mega. But I think the people at Makerbot are building a shield for the mega with 6 steppers and a lot of add ons. So it might be a good idea to wait and mode theres?



  5. i am using a mega clone my self and i like it so far if you look at my other postings you can see the board that i am working on, but i am also eager to see what maker bot will design, i am just doing what i can has i go along

  6. I do not see a thermistor on your heater barrel, where do you plan on mounting it? If the putty doesn't work out for you, I saw the guys on offering some kind of ceramic paste to use with their heater barrels.

  7. Oh I forgot to mention, Kapton tape might work for you too. Thats what they give you to hold down the nichrome (sp?) wire on the heater barrel on the makerbot, and it seems to be working perfectly.

  8. my plan is to attach the thermistor at the top between that part and the extruder barrel of mine, i just like the idea of using welding tips they seem so handy for this project if you ask me. they do need a bit of work to get drilled out though, not very east by hand, i need to get a drill press one of these days.