You guys see this miter saw?

[Beamer]

www.finewoodworking.com/item/28125/new-sliding-miter-saw-from-bosch

I wonder if that many pivot points would hold sturdy over time ... seems like a lotta wear points to get wiggly to me... but i LOVE the idea of a tailless slider .. s'reason i ain't got a slider in my shop now - i don't want to lose 2' behind the fence.

[fredbelknap]

looks like it might be as good as a slider. I'm like you I don't want to give up my CMS for space reasons also the dust collection on mine works great.

[rrich]

Yeah I saw it. The articulated arms don't seem to be as sturdy as the slider mechanisms. (It's a physics thing.) Maybe Bosch has solved that issue??? The arms on my SCMS don't seem to deflect at all.

[TDHofstetter]

Hmmm boy. Every movable joint MUST (if it's to move) have a certain amount of clearance inside the joint. A 0.500" pin won't rotate inside a 0.500" hole. So it starts with a certain amount of slop built-in. Well, all articulating saws (or machines of any kind) do. So... the distance, center-to-center, between pivot points directly affects the amount of working slop the machine has fresh from the factory - two pins 1" apart, with 0.001" clearance for freedom of motion, will give 0.020" slop at ten inches. The same two pins ten inches apart will give one-tenth that amount of working slop at ten inches.

Last aspect... what metal is used in the articulating joint? Cast iron against cast iron is just about ideal - it's exceedingly high-carbon, wears like... like... iron, it's rigid as a nun. Steel (pin) against aluminum (bore) can go either of two ways plus it MUST go a third way. If it's unsealed, grit will embed in the aluminum and wear the steel. If it's sealed, friction will wear the aluminum (witness the early-70's Vega engine). The third part is distortion - steel is ductile, aluminum isn't. In fact, aluminum is one of the least ductile metals we've GOT - distort it a tiny tad & it doesn't spring back - it stays distorted. Every bump, every jolt, every bang... each one leaves its mark on the workings of the articulating joints.

If every one of those swinging joints is carbon-steel-pin-against-carbon-steel(or bronze)-bushing, it'll be tough & wear well. It'll be inherently sloppy, but it'll work. Any pivot joint that's steel-against-aluminum will get sloppier pretty quickly with use.

Interesting how it'll do the big cuts while hugging the wall, though. For that one aspect, lots will buy one.

[Beamer]

I wonder if it's got rotary bearings at those pivot points ... would that help it's slop-factor any?

[dcarter636]

Roller, ball, or needle bearings will eventually get fine dust into the raceways and start catching, clicking, or binding, good seals delay this, really good seals would eliminate the dust but they come with more friction drag. I don't see enough size to those bearing housings to contain impressively rigid ball bearings so it's got to be bushings or roller type bearings, hopefully with very good seals.

Like Tim wrote, if it moves it has either inherent flexing or clearances which equates to loss of accuracy. I have enough issues with the movement in one big pivot, don't want more small pivots wobbling.

[brent]

That would be really great if it works well. I have quite a few Bosch tools and they all seem pretty well designed. Hopefully they figured it out. I bet it ain't cheap, though.