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xoneeleven wrote:...
The grain on the purple heart was long, and very stiff. The stiffness caused the grain to break off in long, skinny pieces.
The cutting direction was "with" the grain...
Mobius wrote:I can't say I've every had a problem. I love using purple heart for V-inlays as it is so dense and holds detail nicely.
The obvious answer here is to not cut with the grain. Try running the job at a shallow angle across the grain, say 10º. Haven't tried it myself but you may get both benefits of cutting with the grain, but enough lateral movement to prevent tearing.
mtylerfl wrote:xoneeleven wrote:...
The grain on the purple heart was long, and very stiff. The stiffness caused the grain to break off in long, skinny pieces.
The cutting direction was "with" the grain...
Could be a number of factors. Depth per pass set too deep, and/or stepover set too wide would be among the first things to consider. I prefer cutting (3D carving) with the grain and have never had a problem.
scottp55 wrote:Mark,
You may still want to post a screenshot of the feeds/speeds you're using(the edit box in the actual toolpath).
Calculators don't always give the best info for your machine/bit/and material.
scott
Rcnewcomb wrote:I'd use a 10% stepover and increase the plunge rate to match the feed rate.
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