Search found 166 matches

by mcman56
Wed Nov 27, 2019 8:03 pm
Forum: General Discussion
Topic: Interrupted Cut Removes Tool Point
Replies: 27
Views: 4307

Re: Interrupted Cut Removes Tool Point

I was semi successful until making a mistake. I need to redesign to make it easier to make. However, the part was not coming out very flat and I think it was warping/ springing when machining. There are cuts on both sides and flatness is important. is there any general advice on keeping such a part ...
by mcman56
Wed Nov 27, 2019 12:03 pm
Forum: General Discussion
Topic: Interrupted Cut Removes Tool Point
Replies: 27
Views: 4307

Re: Interrupted Cut Removes Tool Point

It looks like one of the jaws sticks out farther than the other 3. The tool was contacting the jaw. I should have completed a better inspection earlier
by mcman56
Wed Nov 27, 2019 11:50 am
Forum: General Discussion
Topic: Interrupted Cut Removes Tool Point
Replies: 27
Views: 4307

Re: Interrupted Cut Removes Tool Point

It is 6061 I think t6 and machined fine up to this point. Does aluminum ever have hard spots or contamination
by mcman56
Tue Nov 26, 2019 7:29 pm
Forum: General Discussion
Topic: Interrupted Cut Removes Tool Point
Replies: 27
Views: 4307

Re: Interrupted Cut Removes Tool Point

Very little, just a light hone to make it less sharp
by mcman56
Tue Nov 26, 2019 6:43 pm
Forum: General Discussion
Topic: Interrupted Cut Removes Tool Point
Replies: 27
Views: 4307

Interrupted Cut Removes Tool Point

I have a 6061 AL part about 4 3/8" diameter clamped in a 4 jaw chuck. It is sort of square with round edges. See picture. It needs a narrow tool to reach down inside the jaws. I only need to remove about 0.025" more off of the back face but each time I start, the interrupted cut just takes the sharp...
by mcman56
Sun Mar 31, 2019 4:03 pm
Forum: General Discussion
Topic: Dirt Bike Crank Disassembly Tooling?
Replies: 4
Views: 1717

Re: Dirt Bike Crank Disassembly Tooling?

I don't see any complete cranks available. Rod kit is on order. They can be rebuilt but I'm just not sure what fixture is used to get them apart. .100 is side to side so a shorter reach for what ever i used for support. With a 180 degree rotation there is more like 0.200 but it means what ever suppo...
by mcman56
Sun Mar 31, 2019 1:52 pm
Forum: General Discussion
Topic: Dirt Bike Crank Disassembly Tooling?
Replies: 4
Views: 1717

Dirt Bike Crank Disassembly Tooling?

I need to disassemble a dirt bike crank but the wheels are not solid steel. Much of the material is plastic to reduce crankcase volume. See picture, The black is plastic. Does anyone know what type of tooling is used to support one wheel so the pin can be pressed out? I'm thinking of a small horse s...
by mcman56
Mon Jan 14, 2019 9:00 pm
Forum: Lathes
Topic: What Size Quick Change for Enco 13 x 40?
Replies: 25
Views: 11624

Re: What Size Quick Change for Enco 13 x 40?

I have the Allindustrial mounted but have an issue. It has a collar that threads down through the center that holds the whole assembly together. The mounting stud goes through that with the nut on top. When I loosen the nut to rotate the the assembly, it loosens the collar and they back out together...
by mcman56
Sun Nov 11, 2018 10:28 pm
Forum: Lathes
Topic: What Size Quick Change for Enco 13 x 40?
Replies: 25
Views: 11624

Re: What Size Quick Change for Enco 13 x 40?

I followed the advice and bought a set from all industrial. I have not got it set up but by appearance they are a very good value. Thanks
by mcman56
Tue Oct 30, 2018 9:58 am
Forum: Lathes
Topic: What Size Quick Change for Enco 13 x 40?
Replies: 25
Views: 11624

Re: What Size Quick Change for Enco 13 x 40?

I started to look at ordering but see there are a huge number of brands available. I'm just at the level of getting away from using shims so am not looking at the top of the line models. Are there any recommendations as to which China brands may be better or are they all pretty much the same.
by mcman56
Thu Jan 04, 2018 12:39 pm
Forum: Lathes
Topic: What Size Quick Change for Enco 13 x 40?
Replies: 25
Views: 11624

What Size Quick Change for Enco 13 x 40?

Quick change tool posts are advertised to fit a range of lathe sizes and more than one size is said to work with a 13" swing. Are there any advantages to going for the larger size or smaller size? Any advice?
by mcman56
Thu Aug 10, 2017 9:38 am
Forum: General Discussion
Topic: Matching a Taper?
Replies: 20
Views: 4963

Re: Matching a Taper?

That is great information on measuring tapers. Unfortunately I had no readily available balls or discs of an appropriate size. Since I was already set up and close, I used the Prussian blue method ...really black marker. Using a jewelers head set to watch, I loosened the compound rest and tapped it ...