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I thought you cast end caps on the test cylinders out of sulfur before putting it in a testing machine. Compression only. If you contact a soils lab they should have all the equipment you need.

I'm sorry, but don't bad things happen to people that breath in tiny glass chips? I would certainly protect myself.

Thank you, I've added the Reference Guide to my library.

That is a very good looking stand. I wish I could do that well

You might want to look at thread by Appicnc, "Wire Rope instead of belts / ballscrews". It is possible to use cable to run small cnc machines. It is important to add the working loads on the cable...

I worked for a company several years ago that made a small gantry robot using cables, pulleys etc. They used aircraft cable around nylon pulleys with bearings pressed inside. I believe it was...

Hello John,

The more I hear of the Vital Systems dspmc controller the better it sounds. We had to reserrect a DOS machine just to tune our motors. There are other choices, anyone care to...

Clapper33,

We didn't know of the Vital Systems dspmc controller when we started. That is why we went with the HP-UHU. If you don't want to build and debug your own controller this might be a...

My friends and I have been working on replacing the electronics on a Wells Index 833c. We have redrawn all the schematics we could find. I can post what we have if you like. I don't think you'll...

If you rout out a piece of glass filled plastic where you want the traces, have it copper plated and sand off the top. This leaves the deeper traces. We used this process to make 3D circuit boards....

Can you attach a website address or some pictures of your product?

Bearings are machined to within a few ten thousands of an inch. If the bearing almost fits the problem might be fixed by just taking off a few thousands of an inch off the rod.

Bob

I don't believe this is a problem. I wouldn't have even noticed it except R46 appeared shorted and I thought I made a soldering error. The board obviously works the way it is. I notified...

I have been trying to trouble shoot my HP-UHU board and found that R46 was shorted. When I looked at UHU MODIFIED_Dated1.4.08_R1.0b the schematic page 5 did not match the board page 6. Page 6 shows...

Thank you,

I have the IRFP264N's I need coming from Hong Kong. I just wanted to know I can still get more controllers after I prove out this one.
I am working with several friends to replace the...

I have been waiting for my heat sink for the HP UHU Controller and now that it's here I find that I am short one IRFP264N FET. I had used the forth one on a power dump circuit I built. When I went...

Kirk,

Thanks for the links. Your mascot is a little much for me.

The Wells Index 833 link you sent looks exactly like the one I'm working on only without screen. The motors are a little...

Wow,

That was the information I was looking for when I first began. We have the hardware now. :violin: I'm still looking for a local group, a class or a book that can give me the insights on...

Hello Kirk,

I inherited Mach3 from a friend who changed his mind on building a router so I never looked into EMC2. Looks good and it's free. That's nice.

We have already gone with the HP...

Thank you Kirk,

What I need most is information on how each part of the system goes together. I'm a mechanical engineer and elect is a second language for me.

When I was looking for...

GTownHigh,

I am so happy to find someone else trying to update a Wells Index machine. Hang in there.

My friends and I are trying to update a 1979, Wells Index 833 with ElectroCraft E723...

Hi,

I believe you can find the link at "http:www.cnczone.com/forums/showthread.php?t=14217 "

On page 39 you will find thread 1690 "Modified UHU Rev1.0c Power Stage.pdf "

On page 42 you will...