Poor cut quality - Fix?

[OcalaWill]

I’m working on this address sign and the cut quality of the numbers and letters is not so great. See pictures.

What is causing the jaggedness, and how do I fix this? Note on the number 3, part of it is jagged but the sweeping arc is very nice - I can't figure this! The letters are about 1" tall and the number 3 is 2-1/4”. The open area of the letters is about 1/8” wide.

Info:
GS 4x4 w/AM2
Flexcut 80 w/40A consumables (fresh). FC set to 40A
11Ga steel HR
CH .08
CS 55ipm (line speed test shows 50-55ipm best)
SV 115
PH .16
PD .3
80 psi air (air is clean/dry)

Thanks!

 

[OcalaWill]

Ok, I did a forum search and some others had similar issues as me. In my case it ended up being the 90 deg. lifter station bracket. When I tapped the lifter station you could see the vibration. So I removed this, mounted the LS directly to the gantry and this fixed the jagged cut issue. I also tweaked some pierce points and lead-ins and this helped on a couple of the thin letters.

 

[Kchoghead]

i too had jagged cuts when the lifter station was mounted on the right angle tool bracket... removed it an walla.... jagged cuts disapeared. only downside was that i lost about 1.5 inches in the y direction

 

[OcalaWill]

i too had jagged cuts when the lifter station was mounted on the right angle tool bracket... removed it an walla.... jagged cuts disapeared. only downside was that i lost about 1.5 inches in the y direction

That bracket was a bit of a mistake. I'm surprised TM equipped the tables with it as sensitive as it is to the acceleration/deceleration of the torch mount. I think the less mass the table has to move around the better too.

 

[TheGarageBay]

you guys happen to be able to show a photo of what you are referring to that you removed ? i have the same issue on my classic 4x8 and wondering if this could be the issue

 

[OcalaWill]

This:

 

[Larry Cameron]

Interesting, I have The 2x4 Torchmate with the angle bracket and it never created the problem.
Just must be some do some don’t.

Larry Cameron
RusticMetalArt

 

[Cneee]

Ok, I did a forum search and some others had similar issues as me. In my case it ended up being the 90 deg. lifter station bracket. When I tapped the lifter station you could see the vibration. So I removed this, mounted the LS directly to the gantry and this fixed the jagged cut issue. I also tweaked some pierce points and lead-ins and this helped on a couple of the thin letters.

good to know about this one. I've also read that vibration can really cause the jagged cuts