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Type: Posts; User: EPAIII

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1. ## Thread: Surface area of a cylindrical rigid rod

by EPAIII
Replies
1
Views
78

### For starters, the basic formula for the area of a...

For starters, the basic formula for the area of a cylindrical surface is just the circumference times the length:

A = pi x d x l

A = the area
pi = 3.141 (a constant)
d = the diameter
l = the...
2. ## Thread: Need assistance with a milling job

by EPAIII
Replies
8
Views
596

### It looks like you are making the cut on the Y...

It looks like you are making the cut on the Y (front to back) axis with the X (left to right axis) left unlocked.

Try locking the X axis down for the cut. Then unlock it to move to the next one. ...
3. ## Thread: Custom broaches for laser cut knockout die? Weird custom tooling alert

by EPAIII
Replies
30
Views
1,537

### Forgive me if this has already been suggested, I...

Forgive me if this has already been suggested, I did not read every response.

As I see it you need to cut the slugs loose AND trim those nubs. I would combine those two operations with a single...
4. ## Thread: OT- capacity of distribution panel

by EPAIII
Replies
16
Views
635

### There are a number of PRACTICAL assumptions that...

There are a number of PRACTICAL assumptions that are built into the NEC. Not only does the code allow the total current of the individual breakers to exceed the to capacity/rating of the box and the...
5. ## Thread: Why are spotting drills so expensive?

by EPAIII
Replies
44
Views
5,705

### I am sure that is totally it. Lower volume =...

I am sure that is totally it. Lower volume = higher cost. Economics 101, first day/hour of class.

You can find el-cheapo standard twist drill bits for pennies each. Pretty much the cost of the...
6. ## Thread: Looking for a milling vise

by EPAIII
Replies
25
Views
1,288

### I wasn't going to even mention it, but I recently...

I wasn't going to even mention it, but I recently purchased a Shars 5". It is a good vise, but I don't know how well it compares with a Kurt. I have no experience with the Kurts, but my measurements...
7. ## Thread: Hirth coupling face angle needed.

by EPAIII
Replies
7
Views
433

### First, for those who are as ignorant as I: ...

First, for those who are as ignorant as I:

Hirth joint - Wikipedia

and

curvic coupling - Bing images

If this is for indexing I would assume the load is low and the need for angular...
8. ## Thread: Milling machine for shop with 80-1/2" ceiling

by EPAIII
Replies
39
Views
1,684

### When I purchased my mill, I went through almost...

When I purchased my mill, I went through almost the exact same thing. My shop, at the time, was in a trailer and the ceiling was at a number very close to yours. A general caution that I learned in...
9. ## Thread: Ot- Aluminum exposure/Alzheimers

by EPAIII
Replies
51
Views
3,038

### You really do have to be careful in drawing a...

You really do have to be careful in drawing a conclusion from data that links one thing to another. I can give you a 100%, always true relationship between a certain factor and deaths. Everybody, for...
10. ## Thread: Ot- Aluminum exposure/Alzheimers

by EPAIII
Replies
51
Views
3,038

### Dust mask while SAWING aluminum? I doubt that...

Dust mask while SAWING aluminum? I doubt that anyone here or elsewhere has ever inhaled a single chip of aluminum made by a saw blade. They are relatively large and quickly fall to the floor. I have...
11. ## Thread: Ot- Aluminum exposure/Alzheimers

by EPAIII
Replies
51
Views
3,038

### Boy, axes being ground is it. I have been a long...

Boy, axes being ground is it. I have been a long time proponent of the idea that you can take the exact same set of numbers and PROVE either/both sides of a question. I have personally seen it in...
12. ## Thread: OT- Is it just me or do you guys just hate having to hire someone to fix something?

by EPAIII
Replies
72
Views
3,668

### I am now 76 YO. In my younger years I would do a...

I am now 76 YO. In my younger years I would do a lot more myself. AC, washer, dryer, auto, etc. I built a couple of shops and tackled a couple of easier roofing jobs. I had help on some of it, like...
13. ## Thread: small rant: why do used machine dealers not list prices

by EPAIII
Replies
64
Views
4,710

### Simple rule: If you have to ask, you can't...

Simple rule:

If you have to ask, you can't afford it.

PERIOD!

14. ## Thread: Motor contactor failing on one terminal - question and concerns

by EPAIII
Replies
15
Views
720

### Search for what is called a "solid state...

Search for what is called a "solid state contactor".
15. ## Thread: 1950's collet question

by EPAIII
Replies
14
Views
1,045

### They used a 12" arbor between standard, 60 degree...

They used a 12" arbor between standard, 60 degree centers. They offset the tailstock center by exactly ONE inch. The arbor had the standard 60 degree holes to fit those 60 degree centers.

BUT the...
16. ## Thread: A suggestion for dealing with hobby machinist posts

by EPAIII
Replies
186
Views
14,789

### OK, your point is taken. SBD!

OK, your point is taken. SBD!
17. ## Thread: Using ScotchBrite and Steel Wool in Parts Washer

by EPAIII
Replies
18
Views
1,308

### White = no abrasive? That's not completely...

White = no abrasive?

That's not completely true. I have white pads which have a fine abrasive.
18. ## Thread: A suggestion for dealing with hobby machinist posts

by EPAIII
Replies
186
Views
14,789

### OBSERVATION: You hard working guys who do not...

OBSERVATION:

You hard working guys who do not have the time to waste on talking about hobby grade machines have spent time on 163 posts talking about how to handle them.

You DO know that you...
19. ## Thread: Heat sink machine. OT/Interesting

by EPAIII
Replies
10
Views
886

### That is really neat. My hat's off to the guy who...

That is really neat. My hat's off to the guy who set it up.

What really amazes me is that the fins stay straight. I would have thought that they would come off curved, like most chips that we...
20. ## Thread: What LED fixtures to go with for my small shop ?

by EPAIII
Replies
11
Views
771

### This will probably work for the 8' fixtures with...

This will probably work for the 8' fixtures with single pins on each end of the bulbs.

BUT, while I was rewiring the 4' fixtures in my house and shop I had an electrician do about half of the...
21. ## Thread: What LED fixtures to go with for my small shop ?

by EPAIII
Replies
11
Views
771

### Epoxy floor? I wish it were. It's just gray floor...

Epoxy floor? I wish it were. It's just gray floor paint from Lowe's or Home Depot. I applied it a few years ago, after an acid wash but it is peeling off in some heavy use spots, like where my stool...
22. ## Thread: O.T. Query for heating attached garage.

by EPAIII
Replies
32
Views
1,433

### I have an AC unit with a heating coil. It keeps...

I have an AC unit with a heating coil. It keeps my attached garage/shop comfortable in the winter here. But I am in south Texas, not north Canada.

I would call a local HVAC company or two and get...
23. ## Thread: Making an ER collet holder for VN 12 spindle. How close is close enough?

by EPAIII
Replies
3
Views
375

### Accuracy tricks? The biggest trick I can...

Accuracy tricks?

The biggest trick I can think of would be to do both the taper and the thread in ONE set up. That would probably have been on the lathe, but it could also have been done on the...
24. ## Thread: Workshop sound absorption panel effectiveness

by EPAIII
Replies
20
Views
1,109

### I worked for a company which had a TV studio...

I worked for a company which had a TV studio right next to the room where the heating equipment was located. The boilers were LOUD and the pumps were also. They had a professional acoustic consultant...
25. ## Thread: What LED fixtures to go with for my small shop ?

by EPAIII
Replies
11
Views
771

### Your shop sounds similar in size to mine, perhaps...

Your shop sounds similar in size to mine, perhaps a bit larger. I had six, four foot, two tube fluorescent fixtures and real poor light plus constant problems with the tubes and ballasts. The...
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