Here's the more or less finished end of the filiment extruder. Not sure how well it will work, but plastic is on the way, so i will find out soon. The heater is 230 watt and can heat the melt chamber up to 200C pretty easy, about 8 minutes. The white plates are some teflon i had laying around. Probably a bad choice for heat isolation. I dont want it melting back to the feed screw, so i may need some heat transfer behind the heater. We will see.It is however, a great material for the end of the auger screw to ride on.
An aluminum sleeve was turned from 1 1/2" round bar to fit both the heater and the black pipe. It was then slit down the middle so that the pipe clamp on the heater will squeeze the sleeve onto the pipe also. An M6x1 threaded hole was added to the sleeve for mounting the type K thermocouple.
I dry tested this setup and the teflon seems to do a good job of isolating the heat of the hot tube to the auger assembly.
Next job is to make the base plate the the whole system will sit on. I would really like to enclose everything but the hopper opening and the hot end, but that will be for another day.
No comments:
Post a Comment