Hey everyone, I bought a set of four NEMA 17 motors off eBay and they each came with a gear on the shaft (which is not the right pitch at all). I need to get them off to continue construction, but don't know how! They don't have set screws, so I'm not really sure how else they might be attached. I have tried gripping the gear in a vice and using a punch on what looks to be the shaft coming through the gear. I have tried prying up against the bottom of the gear, levering on the edge of the motor casing as well. How else could this thing be attached. I guess threaded with a threadlock compound is possible. I posted some pictures on my build log on the wiki. Thav's build log Thanks! https://reprap.org/forum/read.php?160,72778,72778#msg-72778 Thu, 15 Oct 2026 03:27:40 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?160,72778,107290#msg-107290 https://reprap.org/forum/read.php?160,72778,107290#msg-107290 Instructables has a pretty good description of how to do it at [www.instructables.com]]]> criswilson10 Stepper Motors, Servo Motors, DC Motors Tue, 22 Nov 2011 12:14:56 -0500 https://reprap.org/forum/read.php?160,72778,106794#msg-106794 https://reprap.org/forum/read.php?160,72778,106794#msg-106794
What's the url for your build log. I'd like to see it. Those eBay motors sure are cheap. Maytbe the way to go on my next printer.

Thanks

Roy]]> roygpa Stepper Motors, Servo Motors, DC Motors Fri, 18 Nov 2011 20:33:35 -0500 https://reprap.org/forum/read.php?160,72778,106737#msg-106737 https://reprap.org/forum/read.php?160,72778,106737#msg-106737 GeeksGoneBad Stepper Motors, Servo Motors, DC Motors Fri, 18 Nov 2011 13:36:10 -0500 https://reprap.org/forum/read.php?160,72778,72797#msg-72797 https://reprap.org/forum/read.php?160,72778,72797#msg-72797
(:D]]> Thav Stepper Motors, Servo Motors, DC Motors Sun, 06 Feb 2011 11:35:23 -0500 https://reprap.org/forum/read.php?160,72778,72782#msg-72782 https://reprap.org/forum/read.php?160,72778,72782#msg-72782 NewPerfection Stepper Motors, Servo Motors, DC Motors Sun, 06 Feb 2011 09:44:53 -0500 https://reprap.org/forum/read.php?160,72778,72778#msg-72778 https://reprap.org/forum/read.php?160,72778,72778#msg-72778
I bought a set of four NEMA 17 motors off eBay and they each came with a gear on the shaft (which is not the right pitch at all). I need to get them off to continue construction, but don't know how! They don't have set screws, so I'm not really sure how else they might be attached. I have tried gripping the gear in a vice and using a punch on what looks to be the shaft coming through the gear. I have tried prying up against the bottom of the gear, levering on the edge of the motor casing as well.

How else could this thing be attached. I guess threaded with a threadlock compound is possible. I posted some pictures on my build log on the wiki. Thav's build log

Thanks!]]> Thav Stepper Motors, Servo Motors, DC Motors Sun, 06 Feb 2011 09:25:00 -0500