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Mill coupler

Started by johnrm, January 25, 2021, 05:39:27 PM

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johnrm

Looking for a drive coupler to attach a drill to a mill.
Wondering is anyone has come across these.
I think its 1/4" hex drive to fit 10mm shaft.


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LordEoin


pob

Have you tried just attaching the mill directly, like a drill bit.

Mine just went straight on & tightened. There was enough grip that it didn't slip when I was setting up the gap width & it jammed.

nigel_c

Quote from: pob on January 26, 2021, 10:44:00 AMHave you tried just attaching the mill directly, like a drill bit.

This is what I do. Works perfect.

iBrau

For typical homebrew quantities just attach the drill directly to the spindle of the mill.

If you were going through commercial quantities of malt then it would be best to use pulleys or gears to couple to your drill or motor. When a drill is directly attached it will cause uneven wear of the roller bearings if the drill isn't perfectly aligned with the mill roller.

johnrm

January 27, 2021, 11:33:17 PM #5 Last Edit: January 31, 2021, 10:04:00 AM by johnrm
Thanks guys.
I tried the drill direct, it slips as it's a non key chuck.
I will try another keyed chuck drill.
I had looked at magnetic bit holders, the female end is the same profile as the male end, so no go.
Needs to be 10mm diam.

iBrau

So is it correct that your mill spindle has a 10mm diameter and you need to turn with a standard 3-jaw drill chuck?

Building an adapter sounds like a nice lockdown project  :)

But really I think you need to try a different drill with better grip on the jaws. My own drill has a hand-tighten chuck and never slips on my mill.

pob

Quote from: iBrau on January 29, 2021, 08:17:02 AMMy own drill has a hand-tighten chuck and never slips on my mill.

+1

johnrm

Mill is on holidays currently.
I will give it a go again connected directly, after my Weetabix.

iBrau

February 13, 2021, 10:04:13 AM #9 Last Edit: February 13, 2021, 10:48:47 AM by iBrau Reason: More image cleanup
Howya John,
I was thinking about your problem and made this ...

You'll never lose grip on your shaft again - satisfaction guaranteed  ;)  ;)

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johnrm

Good job Vince,
I would need to buy a lot of hardware to replicate this, gonna try just the drill again.

iBrau

I don't need it, you can have it.

Are you working from home now or in the city sometimes? I go through or around the city every day for work so could drop it somewhere for you if that suits?

johnrm

I thought that if there was a part available (seems like it is, just hard to get) that I could add this to my kit.
For my most recent brew, Tightening the f**k out of my chuck made it grip fine.
Tightening the f**k is adequate for my needs, just not a stable engineered solution.

Thanks for the offer Vince, appreciated.
I'll PM you for the doodad.

2 other solutions pictured.
A triangle of steel to mate with the chuck.
A segment of steel (bolt cutoff).
Sit either of these into the notch on the shaft.

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