Nate True’s Extruder Hacks
Nate True is an old buddy of mine from Seattle and shepard of the great site cre.ations.net. He’s hotrodded his extruder! Check it!
After some failures Wednesday and today, my dad and I came up with some fixes to the extruder that have made it work fantastically now.N
The first failure was the PTFE barrier bulging out and leaking ABS all over the place – we solved that by using a new PTFE barrier and surrounding it with a 1/2″ copper pipe slip joiner with a slot hacksawed lengthwise into it so that it could change size and slip around the barrier. Then we used hose clamps to clamp really hard down on the copper fitting so that it would not bulge out. There’s a heat sink on there too but we are not sure whether it’s really helping any. Sure looks cool though!
The other failure was the insulator retainer plate starting to crack due to the high pressures. I had the genius idea to put the screws right into the plastruder body, rather than using the plate at all, and was surprised to find out that it all fit together just fine that way. Now the tension is on three parallel plates of acrylic rather than bending a single plate of acrylic around a bend.
The last fix is one that I’ve had on for a long time, that’s the M6 nut around the heater barrel which makes sure the heater barrel is pushed into the PTFE barrier threads, rather than the barrier threads being the only thing holding the heater barrel on. I didn’t have an M6 nut so I just used pliers to make a makeshift nut out of very small brass tube. It works fine!
I post hoping others will find solutions to their extruder problems and that others will suggest more solutions.
More info like this is awaiting your eyeballs in the MakerBot Google Group.
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