I increased the stand off distance, which seems to have helped. I also added some aluminum foil across the top of the plastic body, where the motor mounts, to reflect some of the radiant heat and distribute what heat comes through the 2mm screws.
The initial results look okay. The plastic still gets a little warm, buy does not seem to soften too much. Not sure if it will hold up in the long run.
Recommended Posts
Top Posters In This Topic
35
24
7
3
Popular Days
Jan 14
9
Mar 19
5
Dec 22
4
Jan 26
4
Top Posters In This Topic
foehnsturm 35 posts
aviphysics 24 posts
balvenie 7 posts
jonnybischof 3 posts
Popular Days
Jan 14 2015
9 posts
Mar 19 2015
5 posts
Dec 22 2014
4 posts
Jan 26 2015
4 posts
Posted Images
aviphysics 9
I got around to hooking up the 0.8 Amp Nema 8 stepper today. The assembly seems to work, but the stepper motor started to melt the PLA, despite the 2 mm nuts I was using as standoffs. I will try cutting back on the current some, but I think the design either needs a higher temperature plastic, or needs a fan.
I have some alternative plastic on hand, but don't know when I will get around to trying it. For now, will just try adding a fan.
Link to post
Share on other sites