Search found 1798 matches

by pete
Mon Jan 13, 2020 6:17 pm
Forum: General Discussion
Topic: Keeping drilled holes aligned
Replies: 38
Views: 2473

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: 3041

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: 3041

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.
by pete
Wed Jan 08, 2020 11:08 pm
Forum: General Discussion
Topic: heat shrink fit
Replies: 36
Views: 2782

Re: heat shrink fit

Yeah for sure, and all that experience is generally gained by finding out what doesn't work. :-)
by pete
Wed Jan 08, 2020 6:40 pm
Forum: General Discussion
Topic: First time using super glue chuck
Replies: 65
Views: 4061

Re: First time using super glue chuck

Ever breathed the fumes from hot CA just once? My reaction says it's highly toxic. There's enough other Google hits about heated CA glue being a real health issue I'd not take the link I posted too serious even if he say's he's a chemist. But I should have actually read all of what was in that link ...
by pete
Wed Jan 08, 2020 6:13 pm
Forum: Milling Machines
Topic: Dros for mini mills
Replies: 4
Views: 1231

Re: Dros for mini mills

Maybe more software capability but my Newall is pretty decent. :-) And yeah I know, that's way more $$$$. However the whole reason for adding a dro is to gain a higher degree of accuracy and no back lash compensation. I'd argue some of those cheap caliper type scales are fairly low on the accuracy l...
by pete
Wed Jan 08, 2020 5:33 pm
Forum: General Discussion
Topic: First time using super glue chuck
Replies: 65
Views: 4061

Re: First time using super glue chuck

Heat as mentioned will get CA glue to release, something important to remember though is most or maybe all? CA glues give off fairly toxic fumes when heated to that release point. https://www.stewmac.com/How-To/Online_Resources/Learn_About_Repair_Tools_and_Repair_Techniques/Inside_Story_on_Instant_A...
by pete
Wed Jan 08, 2020 5:00 pm
Forum: General Discussion
Topic: heat shrink fit
Replies: 36
Views: 2782

Re: heat shrink fit

That thermal mass makes all the difference. The bigger & heavier the parts are the more time you have to join the two parts before they thermally equalize to each other. I've watched those same wagon wheel videos and others shrink fitting full size loco wheel rims. And while they don't waste time it...
by pete
Sun Jan 05, 2020 1:13 am
Forum: General Discussion
Topic: Floating reamer holders
Replies: 21
Views: 2304

Re: Floating reamer holders

Unfortunately few to possibly no lathes including brand new ones are ever going to be absolutely perfect in both the horizontal and vertical axis. Horizontally is fairly easy to check and adjust using a DTI attached to a chuck face or face plate and swung side to side. But it's still tough not to ha...
by pete
Sun Dec 29, 2019 2:06 am
Forum: General Discussion
Topic: Floating reamer holders
Replies: 21
Views: 2304

Re: Floating reamer holders

I have a set of Starrett telescoping gauges as well. With the cheaper off shore ones and "IF" nothings bent, there biggest issue is nothing is properly deburred at the factory. Disassembling, cleaning and light stoning to remove all those burrs helps a lot. Too much re-lubrication is worse than none...
by pete
Fri Dec 27, 2019 8:47 pm
Forum: General Discussion
Topic: Floating reamer holders
Replies: 21
Views: 2304

Re: Floating reamer holders

I'd more than agree about boring being superior to reaming. A good dro and proven repeatable quick change tool holders would make it a lot easier to hit the numbers consistently. Getting within a very few 10ths 30 times in a row would still be damn tough and be a whole lot slower. Your length is a b...
by pete
Sun Dec 22, 2019 11:47 am
Forum: General Discussion
Topic: Ball end mills
Replies: 17
Views: 2359

Re: Ball end mills

Afaik ball mills are generally considered as mostly a finishing tool and not what you'd use for hogging material RSG so your points make a lot of sense. I own a Taiwanese clone of a step pulley BP and the design and layout is ok. I bought the model I did because of the built in power spindle feeds. ...