small penta socket

[Matt Joyce]

Hello,

I have a Porlex hand ginder for grinding coffee beans.

It works well, and get lot's of use.

However, the handle has become quite loose, and for some reason they opted to use a pentagon on the shaft.

Here's a picture.

What I would like to have is a socket for the shaft on a standard hex scredriver bit.

So I can use a small elective screwdriver.

I cannot find anywhere which sells this type of item.

Any ideas?

Regards

Matt

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[Ada Lim]

On Fri, Apr 25, 2014 at 5:11 PM, Matt Joyce <matt....@gmail.com> wrote:
> Hello,
>
> I have a Porlex hand ginder for grinding coffee beans.
> It works well, and get lot's of use.
>
> However, the handle has become quite loose, and for some reason they opted
> to use a pentagon on the shaft.
>
> Here's a picture.
>
> What I would like to have is a socket for the shaft on a standard hex
> scredriver bit.
> So I can use a small elective screwdriver.
>
> I cannot find anywhere which sells this type of item.
> Any ideas?

I have one of those too. Try a ring socket. Mine's at work so I
can't measure it to tell you the right size.

the other option is a little jacobs chuck. Jaycar sells one
-http://www.jaycar.com.au/productView.asp?ID=TD2010 - but I don't know
if it goes big enough.
http://www.ebay.com.au/itm/1-4-ADAPT-A-DRIVE-CHUCK-AND-KEY-SET-JACOB-30248-CHUCK-BRAND-NEW-/261247051683
is big enough but needs a chuck key. I think dremel makes one as
well, but I'm not sure what shank it has.

(as an aside, searching for jacobs chuck on ebay brings up a used
synthes mini fragment set. who buys orthopaedic surgical instruments
second hand on ebay?)

[Sam Thorp]

Billy-Joe's Budget Orthopaedics and Taxidermy?

Motto: "If we can't fix ya, we'll stuff ya!"

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[Matt Joyce]

Yep, I have one of the small chucks, and it does not quite fit.

In a moment of optimism, I printed a hex bolthead with a penta hole in the middle, and use a hex socket set.

Nope, the abs just mashed up and I spent 15 min digging it out.  hey ho.

[Ada Lim]

On Sun, Apr 27, 2014 at 5:00 PM, Matt Joyce <matt....@gmail.com> wrote:
> Yep, I have one of the small chucks, and it does not quite fit.
> In a moment of optimism, I printed a hex bolthead with a penta hole in the
> middle, and use a hex socket set.
> Nope, the abs just mashed up and I spent 15 min digging it out. hey ho.

How about laser cut? 6mm acrylic, two layers, bring it out to like a
12.7mm hex bolt head. then you can use a 1/2" socket.

[Andrew]

Some interesting possibilities come to mind using piano wire - say 0.040" or 0.062".

Cut a set of "pins" and embed these into a print to create a hard contact surface with the shaft.

The "Metrinch" style spanners (and others) use similar shapes to move the contact point on nuts/bolts away from the corners to reduce damage and to accommodate a range of sizes with a single tool.

Andrew

[Brendan Campbell]

I have one of these too. I just use a cordless drill, the 3-jaw chuck does work fine on the pentagonal shaft.

[Matthew Higginbottom]

Could you adapt a socket head bolt?  I'm quite sure you could source the right size. 

You could epoxy that into an abs shaft that would fit into your drill/driver or you could find something in steel that the thread on the other end of the bolt would fit into.

http://www.ebay.com.au/itm/300937737600?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Good luck with that.

The other Matt.