I need help making a replacement Y Axis Rail for my CNC Mogul router
Hello,
I've have had a CNC Mogul 4x8 foot CNC Router for several years. Unlike some others on here, I have had good luck with it. I have had no electrical or mechanical problems. It's been in a hackerspace environment its entire life too. But anyways...
As I said, it's a 4x8 foot beast. I want to make it smaller (keep the X 4 feet and make the Y axis 2 feet). I could cut the Y axis rails down but I'd never be able to go back to 8 feet, so that's out of the question. I'd like new, shorter, Y rails but as you probably know, CNC Mogul is no more. I've tried calling the old owner, Mike Stone, at a phone number I found on this forum but it's not connected here.
I called Phil at Gryphon CNC. The machines look similar but they are not compatible with each other. So the Gryphon Y axis rails can not be used with the CNC Mogul gantry.
So, I need to make my own rails. I'm fine with that. The aluminum extrusion is Makerslide. However, my problem is finding the correct Rack Gear and spacer.
This is what I observed from my CNC Mogul's rack:
Height - about 0.250 inches
Width - about 0.250 inches (6.24mm)
Measured Pitch - 7.5 TPI (10 teeth cover 33mm, or 1.3 inches)
Spacer under rack is about 0.080 inches thick, that's 2mm.
Rack Gear is Grey in color, implying it's Acetal per SDP-SI's catalog.
But the 7.5 TPI doesn't match an inch-based rack gear and the metric rack gears don't have a pitch, they have a 'module'. I looked into this and can not figure it out for 100% certainty.
Can anyone determine what size the CNC Mogul rack gear is?
A photo is attached showing how the parts are oriented.
Cnc mogul uses ridiculous plastic rack gear .makes no sense...junk design.....they should have made rack teeth steel and the pinion gear aluminum.or delrin.....thats proper...easier to replace a 5$ pinion gear than repkacing 8ft of rack gear just plain stupidity design...i own a early version mogul cnc...reminds me of a junior high school level build/ design...just a toy.not a machine......its improperly designed and junk.
Last edited by Shelby5041; 05-29-2020 at 08:59 PM.