1/2" Cutting troubles, asking for insight

[LMironworks]

The 80S has been a great addidtion to the shop, espically 1/4" plate. I decided to try cutting some 1/2" parts for my personal cart and this was the best I was able to achieve, here are my settings.
70amps
.50" material HR
2.6 sec pierce
10 ipm
73psi
1.7 tip
.200 pierce
.125 cutting
Running a M60 filter

I should be up and running my drier soon, but should I be getting this much dross with this speed of cutting. I have tried up and downs cutting this part at various settings. The dross is hard to knock off, but the parts come off clean, when cleaned up. I am just worried about the IPM I think I should be getting a better speed than 10 ipm.
The 80S is a upgrade in amps over a PM 30 for the past 2 years. I do get alot of moisture in the air lines, because I swap in a air nozzle and I can just see the moisture spraying out at 80 psi. This is all before it goes through M60 filter. Also another issue is with the white spacer that protects the tip only after 20" of cutting through 1/2" HR, it is toasted and broken off, I'm sure this has to do with the heat and the low IPM. And with the addition of the air dryer soon, I know the speed will pickup, but in the meantime and insights would be great.

[geezer]

Here is some interesting reading on Dross,,,,,http://www.centricut.com/TA_CutQuali...lems.htm.....I assume you have a breaker on your set up that is larger than 50 amps at the wall plug,,,,cause the rule of thumb is you can only get 10 more amps out of the plasma cutter than the supply at the wall plug,,,,eg,,a 50 amp breaker will run a 60 amp plasma cutter,,,I have a PP80 and if I want to get the full 80 amps my breaker for the wall plug must be at least 70 amps,,,

The dross I see looks like low speed dross,,,try a little more speed or reduce your amps...

[performance]

The thing you really need is a Sq05 or S-125 Autocut torch for dedicated CNC cutting. They don't make a 1.7 tip for the S-75. You are way too far off for cutting too. You should have a less than 1/8" down to 1/16".

[LMironworks]

I;ll defintely have a look into that torch setup. The tip size is 1.4, sorry about that. Yes they only come in
1.0=(20-40amps), 1.2=(40-60amps), and 1.4=(60-amps), is what I run them at, hopefully these are good to go.
But that S-125 torch sounds interesting, do you think that is what is causing the problems with the white spacer to melt off?

[performance]

The S75 torch doesn't have those sizes. I think you need to recheck that. The info you have regarding size versus amps is way off. 1.0 is for 50 amps or so. 1.2 is for 70 amps.

[LMironworks]

Holy smokes, yeah I am, now you got me very curious reagarding the cut quality. I;ll keep you posted on the results. I did check out the S105 torch and it sure does look beefy, espically around the nozzle end. I;ll be giving a call in to get more information about that.

Thank You

The S75 torch doesn't have those sizes. I think you need to recheck that. The info you have regarding size versus amps is way off. 1.0 is for 50 amps or so. 1.2 is for 70 amps.

[LMironworks]

Yes I do run a 70 amp breaker, and have run the full 80 amps with no problem with the breaker. Great article and I;ll print that on out and catch up on the info today at the shop. Thank you for the input.