Recent content by David Ferguson

The first thing you're doing wrong, is posting in a thread that's 15 years old.

Any chance you could "sharpen" a piece of pipe and punch the holes using a press, trailer tongue, or even a hammer and block of wood.

Sounds like you should contact DN and get manuals for your machine!

Free Models on GrabCAD: https://grabcad.com/library/software/nx

I figured you would want G97 (constant surface speed off) for all threading to keep the feed/pitch of the thread constant.

Key parts of the Business Plan: - Defining what you do well - Determining the basic costs of making that product, or providing that service. - How you will find customers that need the product / service you do well. - How much will these customers need your product/service (how much will they...

I would make that as two parts and weld or solder them together. Make them just like the mating part with a slot in the vertical cylinder to accept the side piece.

Here's a better description of how the waterjet laser works: https://onlinelibrary.wiley.com/doi/epdf/10.1002/phvs.202000033

I use OpenOffice Draw. I've had to build my own library of components but it's worked well for me creating wiring harness drawings.

Unless an auction says "no reserve", you have to assume there is one. In live (in person) auctions, they sometimes talk the seller into removing the reserve if it's obvious there is a legitimate buyer, and this represents the market value, here and now.

I think you need to use a DC Amp clamp with an oscilloscope, to get a true picture of the current drawn by the stepper motor. Most likely it's trying to step against something that doesn't move.

If a company I worked for advertised jobs at a higher pay rate than I was getting, I would apply for the job! -- why not? I'm a known quantity.

I would think you could do this with rolled sheet and weld the ends together. The key would be your wheel/spokes (at least one at each end to keep the round shape). The thickness of the sheet will depend on how much load there will be that would try to buckle the drum.

To me it looks like that face isn't parallel to the cylindrical section at the top. So it has to make some additional movement along the top edge. I would look carefully at the geometry of that surface.

I think you need to send them a statement showing both orders, and all payments (ie, all your business with them). That statement should show that you are still owed half the amount from the last PO. I think their accounting system never got the invoice for the first job entered, so they...