Hi, I purchased a CAMaster Stinger 1 2x4 (1.7kw spindle) a couple months ago and just completed my first 3D project (10"x10") in walnut shown below. Abstract artsy-fartsy piece.
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As you can see there are some rather deep cuts (up to .86 in deep). I did two roughing cuts. First with a 1/2" end mill (30 min) and a second with a 1/4 ballnose (1-1/2 hrs).
First roughing pass (1/4" steps):
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Second roughing pass (max depth 0.6"):
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Finally I did the finishing pass with an 1/8" tapered ballnose with a 1" cutting height (9 hrs). The finishing pass was with a 5% step over. The final finish was beautiful with only a couple of places with some torn grain that needed sanding (320 grit).
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Now to my question. Given the small stepover, is it possible to avoid the roughing passes and go directly to the finishing pass? Would save a couple of hours and bit changeover. I'm guessing the concern would be stress on the bit. However, I am assuming these bits are capable of cutting full height, but is it advisable for 9 hours? Any advice would be appreciated. Cheers, bob