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Nice job Stefan! My Dremel pantograph uses what looks like the same chuck. I don't use it often but when I want to I can do small detail stuff. With the CNC you have there's no limit to what you can do other than yor imagination. Regards, Rich

Thanks to all for the kind words. My motorcycle has hte backlash free gears between the crankshaft pinion and the clutch basket so I am familiar with that. I won't bother with that this time though. The next phase of work will involve mounting the mechanical digital counter and making some...

Got a little further along today. I had kind of gotten ahead of myself with cutting the gear before figuring out how I was going to mount them. I also got the bright notion that I could part off two gears out of the one .550" thick blank. I had originally made the blanks with a .250" hole which...

Try the counterweight like Charlie and other's have suggested. If you slightly overweight the head so you have to force it to go down you'll have a real smooth and predictable setup. I did this to my X3 mill the first day I got it and I can crank my mill head up or down with very little effort...

I made this one out of hot rolled 1x4 stock about 2 years ago. it works fine and was never hardened. I will point out though, that the threads seem to be the weakest link after much use/abuse. I probably should have heat treated it, but you can always do that later. Rich

Chazz, Please post how you go about the cross slide mod when you do it. I plan to someday also and will find it helpful. Rich

Nice crank mod Chazz! I have the 9x20 lathe also and enjoy it very much. What is the shiny cylindrical thing by the cross slide? At first I thought you made a cross feed bearing housing, but it looks like I can still see the original aluminum housing further back. Regards, Rich

Good Job Kel ! I like the magnetic pointers too. I did something similar but mine is just printed out and stuck to a piece of aluminum. Rich

Slow Progress... Last night I spent some more time on the gear cutting job. I had initially cut in increments to .070" depth indexing between each cut. Got tired of that and changed my method to completing the cuts to total depth before indexing (seemed like less work). Here's a picture of the...

Cedge, Nice work again! I have the Steve Bedair version and often wished it had your features. I did add a swivel-locking feature to mine so I could use it for simple straight machining if needed. Thanx for sharing that, Rich

Well, I think the dovetail cutter undercutting as a final step after initial milling might be worth a try. That would give you quite a front rake to the cutting edge and continue towards the root of the cutter teeth. That's a good idea Arnold. I've been toying with a spreadsheet that helps...

Bob, What I meant was I'll choose to utilize gears of a higher diametral pitch (smaller teeth) whenever possible. For example I could have used 50 teeth instead of 25 and the teeth would have been half as big and a whole lot easier to cut with the size mill I have. Because my dividing setup is...

Had some time yesterday to harden the hob cutter and test it out. I don't know whether it's my cutter design or just how they behave, but you get a lot more pounding with these straight-fluted square-faced hobs. I could only cut ~.020" per cut, but other than the pounding, the cuts looked OK...

ok,Now I'm baffled...but that's my normal mode according to my wife. ;D

Bob, Thanks for the info. I was reading up on undercutting in my copy of Machinery's Handbook 12th edition. According to them: "Slight undercut begins when a pinon of 31 teeth is generated by a straight-sided unmodified rack or hob type of cutter, and this undercut may be excessive when number...

I looked up the half-angle for #0 Morse Taper 1.4908° (this would be the compound angle from parallel with the lathe axis) Taper per foot is 0.6246" For your lathe the Big end=.250" (from the other posts) Rich

Thanks Marv, I actually wrote a similar program but in my post from memory I forgot that important point (ArcTan) Rich

Gunner, Do you have more info or pictures to offer? If you have another accessory such as a dead center that fits the tailstock you should be able to duplicate the taper. There also is a method for measuring a taper by dropping two ball bearings of known different sizes into the tailstock...

Bob, Lots of calcs in making gears. I've saved your PDF file for future reference. Good hard to find info. Looks like your hob worked out great. Congratulations, and thanks for the great writeup and pics. Did you end up with any nicks or undercutting? Also how did you align the tool to the work...

I already had the tool in my box. It is an ACME threading tool for 1" 5 tpi I think. The tip width was right for the width of the root of the tooth. My Father was a machinist and I inherited all his old shop tools. All I did was stone the cutting edge. The 14.5° gear tooth pressure angle is...