Double pierce?

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PoppyWharton
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Joined: Sun Apr 21, 2019 10:23 am

Double pierce?

Post by PoppyWharton » Thu May 16, 2019 1:56 pm

cut issue.jpg
What would cause this nutsack at pierce?
What would cause this nutsack pierce? This is a test cut. We dropped delay to 0, pierce height dropped to .075, 100 volts with standard nozzle setup. Tried all kinds of settings but keep getting this. Rest of the cut looks decent

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acourtjester
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Re: Double pierce?

Post by acourtjester » Thu May 16, 2019 2:57 pm

Giving some info about your table, plasma unit, and software would help. The picture looks like that is stainless. I would say you have some movement at the time of pierce, unless you actually see the torch pierce twice, which make it likely it is a g-code problem. when cutting an open loop or line there is no lead in so the cut should start on the line with no sideway movements. The pierce time is just to allow enough time to penetrate the metal, to short no penetration, to long a bigger hole, so no sideward moving unless slop in the table.
Changing the voltage only affect the cut height after the torch starts moving and the THC is in control, is not used at pierce time.
DIY 4X4 Plasma/Router Table
CandCNC DTHC-IV & Feather Touch
Hypertherm PM65 Machine Torch
Drag Knife and Scribe
Miller Mig welder
13" metal lathe
Small Mill
Everlast PM 256 tig

PoppyWharton
Posts: 4
Joined: Sun Apr 21, 2019 10:23 am

Re: Double pierce?

Post by PoppyWharton » Thu May 16, 2019 4:23 pm

Thank you.
Wright CNC 4x4 table Hypertherm 45XP using Sheetcam. Material is 16 gauge mild steel.

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