Search found 157 matches

by ChipMaker4130
Mon Sep 14, 2020 9:14 pm
Forum: General Discussion
Topic: Is this any good for way oil?
Replies: 14
Views: 1962

Re: Is this any good for way oil?

Actually, way oil viscosity varies with the application. Flat/box ways often use a lower viscosity while Vee ways use higher. The ever-popular Mobile Vactra No. 2 is ISO-68, or roughly 30W. Although it isn't necessarily the best for Vee ways, it is readily available, not terribly expensive and works...
by ChipMaker4130
Mon Aug 31, 2020 7:28 pm
Forum: General Discussion
Topic: Machinist's Level help
Replies: 88
Views: 10358

Re: Machinist's Level help

Go ahead and use it. Accuracy means nothing, sensitivity is what matters. Unless you consider coolant drainage, for which a carpenters level is adequate, a lathe needn't be level at all. Just flat. Therefore you can 'level' your lathe with the bubble a couple of graduations off center, so long as yo...
by ChipMaker4130
Tue Aug 25, 2020 5:16 pm
Forum: General Discussion
Topic: How to increase tightness between splined pieces?
Replies: 21
Views: 3896

Re: How to increase tightness between splined pieces?

You've probably finished by now, but it might be possible to shrink the receiver. If it is steel, heat the bore to red/orange quickly with an OA torch from the inside, then let cool. Spun bearing seats in auto hubs have been tightened up this way. Get it hot enough the first time because subsequent ...
by ChipMaker4130
Thu Aug 06, 2020 6:31 pm
Forum: General Discussion
Topic: Has anyone built a guide for a center drill.
Replies: 9
Views: 2525

Re: Has anyone built a guide for a center drill.

You've got 4 to do. If they're all the same, just set up the steady and don't change anything between parts. If they're not the same, well.... you've only got 4 to do. You'd have 'em done by now! In my opinion, nothing's broken/nothing needs fixing.
by ChipMaker4130
Wed May 20, 2020 7:42 pm
Forum: General Discussion
Topic: Annular cutters
Replies: 16
Views: 3801

Re: Annular cutters

Quality annular cutters, properly held, will make a very accurate hole. No need to start with 1-7/8 and bore unless you need a tolerance measured in single-digit thousandths. Hand-held drill, no. Gooddrill press or mill, yes.
by ChipMaker4130
Wed Apr 22, 2020 1:25 pm
Forum: General Discussion
Topic: Millrite Clamping kit T nut help.
Replies: 6
Views: 1901

Re: Millrite Clamping kit T nut help.

I bought a Te-Co set from Enco many years ago that works perfectly with my Millrite without modification. The nuts are: 1" base, .62" step width and the overall height is .625". The bolts are 1/2". You don't need or want T-nuts to fit very close in the slots, that just makes them hard to move/positi...
by ChipMaker4130
Sat Apr 04, 2020 7:24 pm
Forum: General Discussion
Topic: Drilling #8 Rebar
Replies: 5
Views: 1964

Re: Drilling #8 Rebar

Drilling a 7/8 hole in rebar is an exercise in frustration. I would attempt it with a carbide spade drill, but not a typical twist drill. Its a small piece, why not make it out of CRS and if you need the rough exterior go after it with an angle grinder. Even with the grinding, you'll probably be qui...
by ChipMaker4130
Mon Mar 09, 2020 1:33 pm
Forum: General Discussion
Topic: 6" Baldor Carbide Grinder-Wheels?
Replies: 19
Views: 4315

Re: 6" Baldor Carbide Grinder-Wheels?

Regarding your question on wheel type, those best for carbide are generally not suitable for HSS, and vice-versa. Perhaps your best bet is to put one of each type on either side of your grinder. I use a diamond wheel for carbide (requires coolant), and a regular white wheel for HSS. If your grinder ...
by ChipMaker4130
Sat Feb 29, 2020 10:36 pm
Forum: General Discussion
Topic: Dead soft Aluminum
Replies: 14
Views: 4467

Re: Dead soft Aluminum

pete wrote:
Sat Feb 29, 2020 5:49 pm
. . .Copper will be a bit hard but it's easy to return it to a soft condition just by heating to red hot then air cooling. . .
Better to water quench. It 'cleans' the surface and gets the copper to the absolute softest possible state.
by ChipMaker4130
Wed Feb 19, 2020 9:27 pm
Forum: General Discussion
Topic: hardening and tempering
Replies: 20
Views: 5060

Re: hardening and tempering

. . .2 rods I made for my press didn't bend at full force. . . You don't say what function your hardened parts will perform, but if edge-loaded or if used where a bending force may be applied you definitely don't want super hard. When they break, its like an explosion - shrapnel and all! There are ...
by ChipMaker4130
Sun Feb 02, 2020 7:59 pm
Forum: General Discussion
Topic: Pull start repair.
Replies: 40
Views: 14268

Re: Pull start repair.

A note on the Harris Sta-Silv Black: it is a bear to remove after soldering. When I can, I sand-blast it off!
by ChipMaker4130
Thu Jan 30, 2020 11:00 am
Forum: General Discussion
Topic: When to ream!
Replies: 11
Views: 2610

Re: When to ream!

I would face before reaming. You don't show dimensions, but reaming would typically only take off the last 5-20 thousandths or thereabouts, depending on bore size. There shouldn't be any chatter problems with the reaming operation. (The main reason to face before reaming is to provide smooth entry f...