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Anyone use the Mirka DEROS 350XCV 3" sander for bowls?

I am curious to know more about the Milwaukee M12 Sander/Polisher (2438-20) that Keven, Steve, and now Roger are using. It looks (from the Milwaukee website) like it has no chuck: it seems to have a custom threaded mandrel configured for Roloc sanding discs. I would want to use normal hook-and-loop sanding discs, so I would have to invest in several of the Skilton mandrels that Steve sells through Turningwood.com. Not inexpensive, but Skilton makes good mandrels, so I would make that investment. This unit also appears to be very fast (2800 rpm) even in the "slow" polishing mode, so I wonder if the variable speed is easy to modulate. I already have a more sanders than I need, but the fact that this is light and cordless makes it an interesting contender.
 
Gord Cameron said:
I am curious to know more about the Milwaukee M12 Sander/Polisher (2438-20) that Keven, Steve, and now Roger are using.
Click to expand...

Likewise. I did a little digging and you’re correct that it’s threaded for mandrels; it uses M9 x 0.75 threading

Gord Cameron said:
This unit also appears to be very fast (2800 rpm) even in the "slow" polishing mode, so I wonder if the variable speed is easy to modulate. I already have a more sanders than I need, but the fact that this is light and cordless makes it an interesting contender.
Click to expand...

Having several pieces of Milwaukee rotary kit, drivers, drills, etc. it’s going to vary based on the equipment. For example, it’s much, much easier to maintain a consistent low speed on my (hex shank) driver than on the (chucked) drill, even with both on their respective “low” speed settings. So getting feedback from other users, or trying it out backed by a good return policy, are probably essential. For completeness, I’ll add for folks here that there are two speed settings: Low from 0-2,800 RPM and High from 0-8,300 RPM.
 
You would have to get a thread adapter. I use one with (I believe) a 1/4"-20 male thread to use a Roloc hub and the twist-on velcro backup pads sold by Woodturners Wonders.

The variable speed is trigger controlled, that said I usually run 2" discs at full bore in low range (2800 rpm). They may wear out faster at that speed but they remove wood at a faster rate and I haven't melted any pads- I guess you could using dull paper.

The trigger is a pistol type actuated by one finger and is not as friendly as the ones found on Sioux-type drills or the paddles seen on many air and Mirka sanders. I drilled a hole through the housing and trigger to lock it on with a through-pin when using it for extended periods. The unit would be improved by having a rotary speed control, a lock-on button and a bigger battery. The last one is easy to fix.
 
Last edited:
John Whitley said:
Likewise. I did a little digging and you’re correct that it’s threaded for mandrels; it uses M9 x 0.75 threading



Having several pieces of Milwaukee rotary kit, drivers, drills, etc. it’s going to vary based on the equipment. For example, it’s much, much easier to maintain a consistent low speed on my (hex shank) driver than on the (chucked) drill, even with both on their respective “low” speed settings. So getting feedback from other users, or trying it out backed by a good return policy, are probably essential. For completeness, I’ll add for folks here that there are two speed settings: Low from 0-2,800 RPM and High from 0-8,300 RPM.
Click to expand...
The threading is that weird metric threading, but a 1/4x20 adapter is available. We use these by removing the hex shaft on our Skilton mandrels and putting this adapter on.

SUPROJDM for Milwaukee M12 Polisher sander threaded 1/4" adapter 304 - Amazon.com

SUPROJDM for Milwaukee M12 Polisher sander threaded 1/4" adapter 304 - Amazon.com
www.amazon.com
 
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