G-code is correct but cycle time is brutal, where do you start optimizing?

LeonBelmont · Jan 4, 2026

I’ve got a G-code program that runs clean and the parts are coming out correct, but the cycle time feels painfully long. I’m at the point where I’m not trying to get fancy, I just want the easy safe wins without breaking anything that already works. On one job this week, the roughing and finishing cuts look fine, but I noticed a lot of little “dead moments” between features. It does a retract, then a cautious move, then another move, then it finally gets where it needs to go. Nothing wrong, just slow. I timed it and those in between moves felt like they were adding minutes across the whole program. When you’re optimizing cycle time, where do you usually find the biggest gains first? Retract heights, rapids, entry moves, linking moves, or tool ordering?

ShanoaGlyph · Jan 6, 2026

Those dead moments usually come from CAM defaults. I start with linking and clearance settings, like retract vs stay down, and “minimum retract” choices. Then I look at toolpath ordering, because bouncing between features can add a lot of travel time even if each move is safe.

Alan · Jan 13, 2026

If the cut quality is already solid, I usually start with the stuff that doesn’t change the cutting at all. Clearance and retract heights, then linking moves between features. You’d be surprised how often “safe but lazy” Z hops and long rapids add up to minutes.

Prince_Gotha · Jan 16, 2026

I start by finding one repeated pattern, like retract to Z 1.0 every feature, then seeing if that clearance can be lower safely. Same with slow G00 rapids if feed override is limiting them. Can you post a tiny snippet of the move sequence that feels slow and what your safe Z is.

G-code is correct but cycle time is brutal, where do you start optimizing?

LeonBelmont

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Alan

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