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1. ## Thread: vfd for single phase motor

by Mike Henderson
Replies
23
Views
764

### I'm not a power guy, but aren't 3 phase voltages...

I'm not a power guy, but aren't 3 phase voltages measured line to line? So if you had a VFD with 240V three phase output, wouldn't the voltage across any two wires be 240 volts (at rated Hz)?

If...
2. ## Thread: vfd for single phase motor

by Mike Henderson
Replies
23
Views
764

### I'm not sure exactly what you're referring to but...

I'm not sure exactly what you're referring to but the question of whether you can speed control a capacitor start single phase induction motor comes up frequently. The research I did was an attempt...
3. ## Thread: Japanese chisels leather hoop?

by Mike Henderson
Replies
12
Views
517

### You can buy one of those small benchtop lathes...

You can buy one of those small benchtop lathes and learn how to turn. They're not very expensive. If you like turning you can upgrade to a larger lathe later.

The only constraint on the small...
4. ## Thread: vfd for single phase motor

by Mike Henderson
Replies
23
Views
764

### I did some research on using a VFD with a single...

I did some research on using a VFD with a single phase output to drive a capacitor start induction motor. This post is to pass along what I learned. When I use the term "induction motor" in this...
5. ## Thread: vfd for single phase motor

by Mike Henderson
Replies
23
Views
764

### That's not correct, Rod. Single phase AC power...

That's not correct, Rod. Single phase AC power can be represented mathematically by two counter rotating vectors. In fact, that's why you can reverse the rotation of a single phase motor. The...

by Mike Henderson
Replies
19
Views
762

### I'd suggest contacting LV. The PM-V11 blades I...

I'd suggest contacting LV. The PM-V11 blades I have sharpen up very nicely.

Mike

by Mike Henderson
Replies
162
Views
30,644

### I was able to get an 8" jointer with a spiral...

I was able to get an 8" jointer with a spiral head. And a Festool track saw. The jointer has seen a lot of use. The track saw, not as much, but it's invaluable for certain things.

Mike
8. ## Thread: School clock help

by Mike Henderson
Replies
18
Views
878

### I would keep the movement and get it repaired. ...

I would keep the movement and get it repaired. While it may have no monetary value, it has family value. In the future a descendent may wish to have the clock just because it was part of the...
9. ## Thread: Quality of iGaging Squares

by Mike Henderson
Replies
15
Views
882

### I have iGauging, PEC, Starrett, Mitutoyo, and Lee...

I have iGauging, PEC, Starrett, Mitutoyo, and Lee Valley (probably made by one of the others). The iGauging is not as smooth in operation as most of the others. It seems to be accurate and square...
10. ## Thread: Quality of iGaging Squares

by Mike Henderson
Replies
15
Views
882

### As long as we're talking about upper end squares,...

As long as we're talking about upper end squares, take a look at Mitutoyo squares. I like them better than Starrett.

But for things like 4" double squares, the PECs are great. I can't tell the...
11. ## Thread: vfd for single phase motor

by Mike Henderson
Replies
23
Views
764

### I'm going to keep investigating. One report...

I'm going to keep investigating. One report hinted that the starting capacitor in a regular capacitor start induction motor might cause problems to the VFD. I don't know why yet but I'll keep...
12. ## Thread: vfd for single phase motor

by Mike Henderson
Replies
23
Views
764

### I've often wondered why there aren't more speed...

I've often wondered why there aren't more speed control devices for single phase induction motors. Seems to me that a single phase input to single phase output VFD connected to a standard single...
13. ## Thread: Sweetheart Bedrock 605 Flat Side For Sale...

by Mike Henderson
Replies
7
Views
542

### Wow, great price on a flat side 605! Mike

Wow, great price on a flat side 605!

Mike
14. ## Thread: vfd for single phase motor

by Mike Henderson
Replies
23
Views
764

### Well, yes you can use a VFD to control the speed...

Well, yes you can use a VFD to control the speed of a single phase motor, with certain constraints:

1. You need to find a VFD that outputs single phase. They are made and someone pointed to one...

by Mike Henderson
Replies
15
Views
648

### I never tried snacking on dog treats. Maybe he...

I never tried snacking on dog treats. Maybe he knows something I don't:).

Mike
16. ## Thread: Quality of iGaging Squares

by Mike Henderson
Replies
15
Views
882

### Try PEC. You can find blems at good prices. Do...

Try PEC. You can find blems at good prices. Do a Google search and you'll probably find some. There's a guy on eBay that has a store selling blems and had PEC combination squares at good prices. ...
17. ## Thread: Japanese chisels leather hoop?

by Mike Henderson
Replies
12
Views
517

### I replaced the handles on my Japanese chisels...

I replaced the handles on my Japanese chisels with western style handles. I turned the handles myself. The hardest thing was getting the old handles off. Once I had the old handles off it was...
18. ## Thread: what makes japanese chisel steel so much harder?

by Mike Henderson
Replies
50
Views
2,405

### I don't remember saying anything about Japanese...

I don't remember saying anything about Japanese chisels from the 1800. Could have, but don't remember it. My interest and study has been about western steelmaking and western tools. I don't know...

by Mike Henderson
Replies
9
Views
619

### A Happy Thanksgiving to all. And thanks for all...

A Happy Thanksgiving to all. And thanks for all the information and tips you've given over the years - I learned a lot.

Mike
20. ## Thread: reciprocating saw won't cut square

by Mike Henderson
Replies
13
Views
695

### The new DeWalt 20V cordless jig saw has that same...

The new DeWalt 20V cordless jig saw has that same type of blade guide. I find the saw cuts pretty straight - not perfect but good.

Mike
21. ## Thread: what makes japanese chisel steel so much harder?

by Mike Henderson
Replies
50
Views
2,405

### Antique wrought iron was not excessively high in...

Antique wrought iron was not excessively high in sulphur. Sulphur makes wrought iron "hot short" (or "red-short") meaning that the iron would get brittle when heated to forging temperature.

Our...
22. ## Thread: what makes japanese chisel steel so much harder?

by Mike Henderson
Replies
50
Views
2,405

### I'm not sure that's true. The diffusion of...

I'm not sure that's true. The diffusion of carbon into steel is a very slow process. When Blister steel was made, for example, they ran the furnace for a week or more to diffuse carbon into the...
23. ## Thread: reciprocating saw won't cut square

by Mike Henderson
Replies
13
Views
695

### That's the bane of jigsaws. Most of the ones...

That's the bane of jigsaws. Most of the ones I've used do that - don't cut straight down when cutting a curve through thick wood. Some jigsaws are better than others.

If you can make the cut on...

by Mike Henderson
Replies
9
Views
459

### You can buy dyed veneer in many colors at B&B...

You can buy dyed veneer in many colors at B&B Rare Woods. Certainly Wood carries bloodwood - or used to. I doubt if you're going to find black ebony veneer - I use dyed black veneer.

Mike
25. ## Thread: what makes japanese chisel steel so much harder?

by Mike Henderson
Replies
50
Views
2,405

### Don't get too excited about a chisel marked "cast...

Don't get too excited about a chisel marked "cast steel". In old tools, the words "cast steel" actually means "crucible steel", steel that was melted in a relatively small crucible. Prior to the...
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