Great explanation and visual. 👍

That was actually easier than one would think. Thank you for that simple and straight forward instructional video. I'm sure the person it was intended for, appreciated it very much.

Thanks Patrick. I'm tasked with tuning up 3 guild raytechs. This is a help!

Obrigado por compartilhar aqui no Brasil usamos uma máquina chamada Lapidart.Essa eu sempre vejo mas não sabia usar.

That's just so smart.

Have you ever used a mast machine? and if so how would you compare the usability and precision between the two of them?

@DonohueLabs

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I've only briefly used a mast. Both are perfectly usable, with one of the main differences being in how you inspect the stone. I like the handpiece style where I can pick up the whole assembly and rotate the stone every which way, whereas with a mast it is stuck to the quill and has a limited range of movement. But once you're used to that, it's not an issue. Both can be very precise, but precision and repeatability (which is just as important) is easier to achieve on a mast machine. Mast machines have height markings and some have more precise angle indicators where you can go back to the same spot exactly, whereas the handpiece you have to use your eyes and ears more. Mast machines also (generally) have less flex - the raytech shaw has hard polymer plastic feet but even those can compress very slightly with pressure. Since the American made machines are all of great quality, I heard it described recently as that with more expensive machines, you're buying "information" rather than better "quality." So with mast machines and pricier options you get digital angle readouts, depth gauges, height indicators, fine adjustments, etc, that all make it *easier* to cut a gemstone, though it is *possible* on any machine.

There's no way to "lock" that knob that raises and lowers the hand-piece?

@DonohueLabs

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Like with the back feet, there is a set screw that can be tightened with an allen wrench. You could crank that very tight if you didn't want the center to move at all.

@MikeG-js1jt

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@@DonohueLabs Roger that.....