Recent content by mbond

That's a good clamping method for welding

I agree about pressure - but if you can't apply any, then it is moot. The larger the hole, the more options; but if it needs to be small, and round, and you can't mount the piece in a machine, then the choices get thin

That's going to be hard. Unless you can change the problem around, it is likely to take a lot of patience as you abrade the hole. A diamond burr is probably the best tool, but it will be very slow

A small hole will be much harder than a big one. Is this part attached to something, or can you put it into a machine?

Also, a slight convexity on the wheels can help keep the belt centered and make it harder to throw

oh good - I mean not good - but it is much worse if we pretend

I hope that those emojis are for the insurers and not for me because I said it

I think it is important to remember what people really want insurance for. The main purpose of buying insurance is to cover most of the cost of something that you can't afford to pay all at once. And that means, that any serious claim is going to be for an amount of money that is worth...

One thought would be to run it without the belts at all. If the problem is still there, then you can focus on the motor & motor mounts. If not, then add in one belt at a time and see what happens

He sent me a link to a OneDrive location via PM

Based on the videos that you shared, you must have some kind of balance or alignment problem. In addition to the sound, there seems to be a visible vibration. If that's right (it is hard to be sure from the video), it is hard to give any more specific advise

Can you make a recording of the noise that you hear? Even from a cell phone? If it lets you, save in an uncompressed format (.wav) If you know the gear / pully ratio(s) in the machine, that could help you to isolate what rotating parts represent possible sources

To get single phase from 3 phase is trivial - just use one of the phases to get 3 phase from single phase. Analog or digital conversion. Analog is some variant on using a single phase motor to power a 3 phase generator. A purpose built rotary phase converter, or one of the home brew...

I think that there is a lot of over thinking going on here. First, is the problem a vibration in the machine? Or an unstable spindle speed? If the question is 'can bad power from the mains cause that', then the answer is yes to both. But there are limited number of ways. If you want to...

If you have had the motor off the mounts and don't see (hear) the problem, then it almost can't be the supply