Search found 192 matches

by Phil3
Fri Nov 25, 2011 7:09 pm
Forum: General Discussion
Topic: How Do I Create This Pocket Recess?
Replies: 1
Views: 731

How Do I Create This Pocket Recess?

I am a novice and am perplexed over how to create a lever that fits over a door lock deadbolt shaft. I could probably buy one, but thought I would make it. More of a challenge than I thought. The shaft that sticks out from the lock face is rectangular when seen from its end. It is .426" wide x .277 ...
by Phil3
Fri Oct 28, 2011 6:20 pm
Forum: Milling Machines
Topic: Cutting Deeper in Center of Stock?
Replies: 5
Views: 1436

Cutting Deeper in Center of Stock?

Using my small milling machine, I noticed that when I mill a longer piece of stock (5" long piece of aluminum bar), the mill appears to take a deeper cut at the extreme ends of the stock. This happens as the table and stock move along the X axis. I thought maybe the mill was worn enough so the table...
by Phil3
Sun Sep 18, 2011 8:30 pm
Forum: General Discussion
Topic: Baffled..On a Stupid Puzzle
Replies: 30
Views: 4586

Re: Baffled..On a Stupid Puzzle

I made a tight fitting spacer out of some scrap. About .625" ID (close to shaft diameter) and around .575" long. I put a bevel on the inside edge of the bore on one side and left a sharp edge on the other side. The non-beveled edge results in the spacer having a gap at the outside edge of shaft shou...
by Phil3
Sat Sep 17, 2011 6:33 pm
Forum: General Discussion
Topic: Baffled..On a Stupid Puzzle
Replies: 30
Views: 4586

Re: Baffled..On a Stupid Puzzle

Well, DTI indicator readings are nothing special. I measured at 90 degree rotational intervals. These are 0, 90, 180, and 270. All radial runout readings shown are in that manner. For the sake of clarity, the reading at "0" degrees is .000" 1) Measured close to grinder housing. .0000", -.0019", -.00...
by Phil3
Fri Sep 16, 2011 9:42 pm
Forum: General Discussion
Topic: Baffled..On a Stupid Puzzle
Replies: 30
Views: 4586

Re: Baffled..On a Stupid Puzzle

OK, here are the pics. The Jet grinder shaft on left side, and the two flanges. When a flange is pressed up against the shoulder, it easily rocks. Maybe due to the small shoulder, or something not right with the shoulder. - Phil
by Phil3
Fri Sep 16, 2011 12:40 pm
Forum: General Discussion
Topic: Baffled..On a Stupid Puzzle
Replies: 30
Views: 4586

Re: Baffled..On a Stupid Puzzle

I'd like you to inspect the shoulder, looking for an inside corner radius. I assume it has one, although they may have provided an undercut instead. In any case, don't trust your vision, even magnified. Place the tip of a DTI against the shoulder, then rotate the shaft. It's important to determine ...
by Phil3
Thu Sep 15, 2011 3:54 pm
Forum: General Discussion
Topic: Baffled..On a Stupid Puzzle
Replies: 30
Views: 4586

Re: Baffled..On a Stupid Puzzle

It may be that the cut that creates the shoulder on which the inner flange bears is not at a right angle, or it may have been a cut terminated without dwell, so there's not a square shoulder, but a helix on which the flange bears. I suggest you remove the armature from the motor, then make a setup ...
by Phil3
Thu Sep 15, 2011 10:00 am
Forum: General Discussion
Topic: Baffled..On a Stupid Puzzle
Replies: 30
Views: 4586

Re: Baffled..On a Stupid Puzzle

Well, I am completely stymied. A grinding wheel on this grinder, even with machined flat flanges , looks like a potatoe chip spinning around. It wobbles, badly, just as badly as it did before I machined the flanges. I did more testing, without the grinding wheel. Axial runout on the grinder shaft fl...
by Phil3
Tue Sep 13, 2011 10:52 pm
Forum: General Discussion
Topic: Baffled..On a Stupid Puzzle
Replies: 30
Views: 4586

Baffled..On a Stupid Puzzle

This is such an embarassing question and puzzle I very nearly did not even post it. If I can't solve this, I may need future help tying my shoes. I recently acquired a Jet 8" bench grinder and the stamped metal flanges were not flat, so decided to start making new ones. But, at the same time, decide...
by Phil3
Mon Sep 05, 2011 12:48 am
Forum: Lathes
Topic: Depth of Cut - Southbend 9"
Replies: 5
Views: 1624

Re: Depth of Cut - Southbend 9"

Aluminum machines quite nicely, especially with positive rake and a chip breaker. Pick a speed at which you are comfortable, then try taking .100" per side, per pass. Juggle feed rate if you find the machine runs without effort, or if it struggles. If it struggles, even when reducing feed rate, you...
by Phil3
Sun Sep 04, 2011 8:53 pm
Forum: Lathes
Topic: Depth of Cut - Southbend 9"
Replies: 5
Views: 1624

Depth of Cut - Southbend 9"

I have a Southbend 9", with a square piece of 3" x 3" x about 4.5" long piece of aluminum in a 4-jaw. I need to turn this down to a 3" diameter round bar. How much can I take off per pass (would be 2X this for total diameter reduction). I am new, so not sure how far I can push the lathe per pass. It...
by Phil3
Sun Sep 04, 2011 8:26 pm
Forum: General Discussion
Topic: Noob looking for some help
Replies: 6
Views: 1429

Re: Noob looking for some help

Finding someone to work with is a big plus. Ask me how I know. I met two good people here that have helped me out. As the previous poster said, there is a lot to learn just by visiting this forum.

- Phil