Friday, April 9, 2010

work on my extruder

i have started to do a little work on my extruder, i am going to use a mig welding tip has my extruder so far i think it is the best choice for me.

i am using a .035 tip so i think that will work for me, if not i can drill out the tip to a bigger size.
 i am trying to do my best to use what i can find to build it.



i am also looking into what to use to hold the nichrome wire in place too and to see what i can find here in my town

i am thinking some of the jb weld putty it says its good to 250F continuous 300f for s short time

i will need to start looking for a stepper from my extruder soon i think. i am currently short one

3 comments:

  1. Instead of JB Weld I used Bison 'Thousand degrees cement'. I needed multiple layers of it so I force-cured every layer in the gas oven for ten minutes (intead of the 24 hours mentioned in the instructions). When cured it is very hard but not verly brittle.

    http://www.bison.net/US/en/view.do?UID=af993e0fc2c7dd2dc07c64

    Success!!

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  2. JB weld has been tried, and was even the official "way to do it" for awhile. It was discovered that it degraded over time, and after a few hundred hours of use would break down, becoming brittle and cracking.

    Fire cement, a claylike material used in chimney and fireplace building and repair, is now recommended instead. Only problem is that it's usually sold in a multi-pound bucket. You'll only need an ounce or so. If you can find a chimney repair guy, maybe he'll give you some?

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  3. i was thinking of another product that jb weld has at the store i am working at, but it is still not rated high engough, i was hopeing that it could work for me though.

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