Search found 1759 matches

by pete
Sat Jan 18, 2020 9:11 pm
Forum: General Discussion
Topic: Creating a GROOVE inside a very small TUBE (on the lathe)...
Replies: 9
Views: 292

Re: Creating a GROOVE inside a very small TUBE (on the lathe)...

Already hardened metal items will obviously work, most of it will be some type of high carbon steel with unknown quality's. And yes high carbon steel was and still is used today and it was the only tool steel available for multiple century's. But it's now mostly used in home shops to come up with cu...
by pete
Sat Jan 18, 2020 8:04 pm
Forum: General Discussion
Topic: Internal tapered bore
Replies: 10
Views: 279

Re: Internal tapered bore

Depends on how your lathe is equipped for that best method. Ideally as Whateg0 said a proper taper turning attachment would be about the best method without the correct chambering reamer. Most TT attachments seem to have about + - 10 degrees per side for angle setting, and while I don't know the tap...
by pete
Sat Jan 18, 2020 2:38 am
Forum: Lathes
Topic: grinding carbide inserts
Replies: 10
Views: 284

Re: grinding carbide inserts

The slow speed diamond grinders Glenndo makes have accessories to re-grind inserts. https://accu-finish.com/ Other than the already honed and usually aluminum specific inserts most other inserts that I know of have the cutting edge in the same condition as the sintering and coating process leaves th...
by pete
Fri Jan 17, 2020 12:27 am
Forum: Milling Machines
Topic: installing quil on mill drill
Replies: 35
Views: 2002

Re: installing quil on mill drill

If I'm reading your description properly your talking about the shaft that has the pinion gear on it right? With that shaft bent it try's to force the pinion teeth deeper into the rack teeth on the back side of the quill. Since the already low clearance between those two parts wont allow that to hap...
by pete
Fri Jan 17, 2020 12:21 am
Forum: The Photo Album
Topic: Amazing machine work
Replies: 47
Views: 9634

Re: Amazing machine work

To my ears I like the Merlin better than the round engines, maybe it's the super charger that helps the sound. Either way I can only afford to listen to them though. :-)
by pete
Thu Jan 16, 2020 6:07 pm
Forum: The Photo Album
Topic: Amazing machine work
Replies: 47
Views: 9634

Re: Amazing machine work

Awesome plane Glenn and I'm more than impressed. A low pass with a Merlin at full throttle has to be about the best sound in the world. That's even better than a NHRA nitro engine at full throttle in my opinion.
by pete
Wed Jan 15, 2020 4:41 pm
Forum: Milling Machines
Topic: Broken Hearted... My new to me 1942 Van Norman No.12 Spindle Ring and Pinion shot
Replies: 20
Views: 475

Re: Broken Hearted... My new to me 1942 Van Norman No.12 Spindle Ring and Pinion shot

Ouch, that really is a bad day to find something like that. If it were me I think I'd repost the same thing with your pictures here. https://www.practicalmachinist.com/vb/antique-machinery-and-history/ The regulars there are more than knowledgeable and who knows you just might get lucky (maybe) with...
by pete
Wed Jan 15, 2020 4:14 pm
Forum: General Discussion
Topic: crossbow build
Replies: 6
Views: 371

Re: crossbow build

If you don't already know of this channel? https://www.youtube.com/user/todsstuff1 He does extensive research and there's quite a bit of cross bow information with a bit of digging through his past videos. Some interesting information as well about what these types of weapons were and were not capab...
by pete
Tue Jan 14, 2020 9:40 pm
Forum: General Discussion
Topic: Keeping drilled holes aligned
Replies: 38
Views: 1064

Re:Center Punching & Marking Out

I hope Ron doesn't mind some further OT information. In one of my T.D. Walshaw books (Simple Workshop Devices) he goes into a bit of detail about hand layouts, center punching, coordinate layouts and machining and an accuracy test that was performed at a technical collage in the UK I'm guessing arou...
by pete
Mon Jan 13, 2020 6:17 pm
Forum: General Discussion
Topic: Keeping drilled holes aligned
Replies: 38
Views: 1064

Re: Keeping drilled holes aligned

First there's not enough information Ron. You need to quantify how "exact" that exact is. Different levels of +- accuracy dictate how it needs to be done. A big difference between a visually in line row of holes to run small bolts through @ + - .002", and better than .0002" to line two precision bor...
by pete
Fri Jan 10, 2020 1:17 am
Forum: General Discussion
Topic: Piston or Wedge QCTP.
Replies: 19
Views: 2321

Re: Piston or Wedge QCTP.

Hmmm, that link I added is faulty and it's now too late for an edit. For anyone interested enough just do a Google search for Practical Machinist Multi Fix and the thread will come up.
by pete
Thu Jan 09, 2020 6:42 pm
Forum: General Discussion
Topic: Piston or Wedge QCTP.
Replies: 19
Views: 2321

Re: Piston or Wedge QCTP.

Even the pros on the Practical Machinist forum don't have much to say against the Chinese built Multi Fix clones. https://www.practicalmachinist.com/vb/g ... 851/Anyone with Forrest Addy's experience and him liking them is good enough for me.