Thanks for these videos! Fun looking them and nice Knowledge 👍

@petestools

3 жыл бұрын

Glad you like them!

Most cutters of 40 amps require a minimum of 5CFM, or the metric equivalent. It’s not the air pressure that needs to be changed, which most manufacturers state to be from 90-125 PSI (6.2 - 8.6 bar). It’s the CFM that changes depending on the thickness of cut. 1/8” or 3mm needs 3CFM, at least, and 1/2” 12.5 mm needs at LEAST double that. So my Thermal Dynamics 40 amp model (the new one, not the old one) requires, according to ESAB, from 3.3 -7.5 CFM, depending on the thickness being cut. This is up to 1/2”. 12.5mm for a high quality cut, and is minimally useful to a 1” sever, which is a poor quality cut. The problem with compressor ratings is that they’re not really good for long term use. For more than about 30 seconds, or so, depending on the model, other than for commercial models, derate the CFM by 35%, or so. So a model rated at 10 CFM is really good for maybe 7 CFM. The tank size does matter, but even a 20 gal tank will run down quickly below startup pressure. A 50 amp cutter will require about 20-25% more CFM. About 12 as a decent size, if it’s real. In the States we have 120 volt 20 amp, and can easily get 240 volt 20 amp, which is standard for air conditioners. The welder standard around the world is 50 amp 240. You can manage, if your welder does it, with 120 20, and even, for small welders, or really lowered output 120 volt 15 amps. But I don’t recommend it. So in my shop, for my welders, I have 50 amp 240 volt. My cutter has the same plug, so I move one out, and the other in. This isn’t a professional shop. My entire basement and two car garage are my shops.

@petestools

4 жыл бұрын

Great thanks for that i would like 3 phase in my shop but would cost over 5 k to get it so not worth the trouble .cheers pete

@panfon5650

2 жыл бұрын

Mel is CFM measured at specific psi ? Some machines quote CFM @ 90psi other just state free air and if they are capable of 145psi then free air will be better at lower psi surely?

@melgross

2 жыл бұрын

@@panfon5650 cfm must be reported at some pressure number. Free air, such as that from a fan isn’t useful, obviously. As soon as air moves through a tube, pipe or whatever, it’s restricted. So the pressure within that carrier has a higher pressure than the surrounding air. In fact cfm is reported as scfm, which means “standard”, which is at a specific temperature and such. In a plasma cutter, a main function is for the air to push the melted material away from the cut, which is why it sparks so much. If the air isn’t at whatever pressure the manufacturer states is needed, then the molten material just sticks to the cut. It’s the force of the amount of air and the speed of the air caused by the pressure that does that work. High volume, low pressure air would just billow out and do little.

Hey yeah Pete, Gday to ya from Texas, I've just got a little 21-gallon upright from Harbor Freight and I had to locate it around the house from the shop cuz it would blow the circuit took another 100' hose length but everything is alright now, hope this helps.

@petestools

5 ай бұрын

Texas cool man long way from me

Brilliant video thank u 😍👀👀👀👀👀👀👀👀👀👀👀👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍

@petestools

2 жыл бұрын

So nice of you

HI PETER !! MY REGARDS FROM GREECE !!!

@petestools

3 жыл бұрын

Thanks mate

Hey don’t know if your still stuck on this issue but you could try running the air compressor off a different breaker most breaker panels can handle 100 amps or something like that so as long as you have room for another breaker you should be able to do that pretty easily.

@petestools

2 жыл бұрын

My household max breaker is 15 amp

thanks for your video for a 50A 220v plasma cutter station what type of compressor is required?

@petestools

4 жыл бұрын

Hi this video might help , kzread.info/dash/bejne/d2pnvJhvfpTPabw.html cheers pete

very userfull demo. Thanks Pete

@petestools

3 жыл бұрын

thanks

Check the CFM on the plasma cutter a 3.5HP 60 Gal should work but if you can get a 5HP 80gal tank better.

@petestools

4 жыл бұрын

Hi 3 hp is all i can run in my ship cheers pete

@googlefuuplayad9055

3 жыл бұрын

@@petestools ship.? Cool 😀

Is the compressor a bit rooted Pete? Do you know what CFM/ ltd min free air and hp of motor?

@petestools

2 жыл бұрын

Yea its old like me LOL

So pretty safe to say u cant run the compressor and the plazma on the same circuit at the same time so plug one of then into a different circuit ?

@petestools

Жыл бұрын

If your compressor is very small you might get away with it.

Here in the UK or at least with me i have 230v and can draw 30 amps and our earth plugs are no where near the size of that

@petestools

5 ай бұрын

yea more power is best

Do plasma cutters need higher air pressure when making thicker cuts (higher amps)? Or is it all the same.

@petestools

4 жыл бұрын

yes normally but thats sometimes hard if your limited with your air supply.

@fabricationworkfabrication7788

3 жыл бұрын

kzread.info/dash/bejne/lK51x5KmktPThso.html plasma cutting machine with air compressor

I have compressor 1,5hp - 12kg, 8 bar, 172 lt/ minute, Is that enough for cut 40?

@petestools

3 жыл бұрын

only to cut under 4 mm for short cuts , Cheers pete

Looking forward to seeing what you come up with for increasing the air storage. I'll bet two bits to a bottle of piss you've already claimed a tank from the tip :)

@petestools

4 жыл бұрын

Ha-Ha you know me to well. thanks for watching mate

It sounds like your compressor is not working to capacity

@petestools

3 жыл бұрын

just to small

@fabricationworkfabrication7788

3 жыл бұрын

kzread.info/dash/bejne/lK51x5KmktPThso.html plasma cutting machine

your compressor seems to have issues Better call the compressor doctor

@petestools

4 жыл бұрын

its to small for my plasma cutter

@fabricationworkfabrication7788

3 жыл бұрын

kzread.info/dash/bejne/lK51x5KmktPThso.html plasma cutting machine with compressor

Since the rest of the world has gone to Metrics a long time ago, I would appreciate if you stay with Metrics so people don't have to google the equivalent. Americans are the only country who chose to stay using the old Imperial and they're the ones who should find the conversion instead.

@petestools

4 жыл бұрын

lol true

@DANIEL-ls5ku

4 жыл бұрын

@@oldandstong6504 Moved

@theboilershop1728

2 жыл бұрын

Cubic Feet per Minute (CFM) is one of those imperial units that is still referred to globaly. People installing and repairing compressors all over tge world still refer to CFM instead of LPM. It's the most important figure to look at when purchasing a compressor and it frustrating that half the time the CFM or LPM is no where to be found on a compressor.