Tool for comparing lead screw pitch  

RE: Tool for comparing lead screw pitch

That's pretty clever! I have not printed it yet, but like the lever-based "amplification". 👍 

Oh, and I like your new avatar picture! 😎  

RE: Tool for comparing lead screw pitch

I will try this tomorrow as I have a dodgy pitch on one of my lead screws. Only problem is I have no idea how this works…any chance of a video (an idiots guide 😂)

RE: Tool for comparing lead screw pitch

It's pretty easy. Hold against screw so tilted wedges engage threads. Compare pointer position between different screws. If the screws are seriously different, it might not have enough range, but that's what you're trying to determine!

RE: Tool for comparing lead screw pitch

So, did anybody try this? Did it work? Was it a bust? Even bad feedback is better than no feedback!

RE: Tool for comparing lead screw pitch

I didn't get round to it, mainly because my simple brain doesnt comprehend how it works 😂
Also because I had all 3 motors out of my machine last week so it was very simple to put them side by side and accurately determine which screws have sketchy pitch.

RE: Tool for comparing lead screw pitch

Yes, with the motors out, life is easy! As for the tool, there's a protrusion at the bottom that you push against the screw, where it drops into the thread groove. There's another one at the top, pivoted. It also gets pushed into the thread groove. If the pitch is a bit long or the pitch is a bit short, the protrusion has to pivot up or down. That moves the pointer and shows the difference between screws.

The device itself is dirt simple; the trick was getting the angle of the protrusions right for the screw, about 20 degrees, and the size of the edge such that it hits a reasonable location in the thread, ideally the pitch diameter. User doesn't need to know any of that. 😀