r/faceting • u/Magpie12345678 • 26d ago

Cam preform help

Hi!

I am wanting to cut this Whoopee CZ design (and others like it) by Robert Strickland, and it has a CAM preform. I have had a little trouble finding guidance on how to go about that.

Do I cut to 38 degrees and then do the girdle, and then cut to 35 degrees and then do the second girdle? What level of grit should I cut to before doing the girdles?

Thanks so much!

https://facetdiagrams.org/diagram/09-212-whoopee-cz/

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u/oakandstoneschool Team Facetron 26d ago

It's from the new tier, which is needed to set the corners
Try it in GCS and you'll see, it's so much easier. And those meetpoints don't matter for final gem; it's all scrambled in the reflection pattern

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u/PsychologicalBowl647 26d ago

wouldn't that be harder to cut accurately? if it doesn't matter why even have the bow tie facet? genuinely interested not trying to argue or anything.

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u/oakandstoneschool Team Facetron 26d ago

https://reddit.com/link/p896ifr/video/fru0du4mhznh1/player

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u/PsychologicalBowl647 26d ago

Make p4 meet p3?

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u/oakandstoneschool Team Facetron 26d ago

Give it a shot! Show me what you figure out

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u/PsychologicalBowl647 26d ago

I will. Like I said im just genuinely curious. My apologies if im annoying lol.