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11-23-2014, 06:40 PM #11
Hi Rick,
The screw is just a simple Grub screw, the same size that is locking in your extruder feeder gear - I have never bought them as a seperate item, but when I buy a hobbed gear, they usually come with a few grub screws (you would have some spares in your other extruder)
But as you said, you may have stripped it a little. This isn't the end of the world.
All that grub screw is doing it pressing against the heating element (the silver bullet thingo) and keeping it in that metal head so it doesn't fall out. It serves no other purpose. The ceramic heater yes, does work a little more efficiently when it is pressed against the metal block inside by the grub screw, but I have also stripped my kossel screw hole - I do not really notice alot of difference. If you are lost and cannot keep the screw tight enough, put the ceramic heater in and tape the absolute crap out of it with the thin kapton tape - basically so the ceramic heater cannot fall out of the metal block.
The hole the heater fits into is pretty snug. It's not exactly flopping around in there so even with it taped together holding it in, it still gets enough contact with the metal block to transfer the heat to the extruder piping.Hex3D - 3D Printing and Design http://www.hex3d.com
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05-20-2024, 12:56 AM in Tips, Tricks and Tech Help