> Hi Tony,
> Thanks for the offer, I will consider it as =A3222 seems more =

> reasonable :).
> On a serious note what do you think I should roughly expect =

> to pay for this part?
> What I am trying to gauge is the costs involved, I have other =

> parts I need which are a bit more complicated but nothing =

> overly complicated and I need to see if getting them made is =

> feasible as a hobby.
> I have a lot of ideas I want to try but without machined =

> parts is very difficult to realise them, which is just frustrating...
> Best regards
> 		Luis =



Depending on your tolerances, not much.  1/10mm isn't even trying.  For
example, what are the 4mm holes for?  If they are just bolt holes, then fine
tolerences aren't needed.  For that you can just drill them (drills make
slightly oversize and oval holes).  To get them exactly 4mm round, you'd use
a milling bit.  Drilling is cheaper than milling.

Cost would be closer to 20 pounds than 220, and that is mostly labour.  =


10mm aluminium plate is readily avaliable, the last chunk I brought was
about 300mm (a foot) square and cost me $AU25 (10 pounds).  A 50mm piece
would be considered scrap by some.

To make it I'd drill the holes on the mill, rough out the disc with a hole
saw, bolt it to a faceplace on the lathe & size it to 50mm.  You could do it
all on the mill but the lathe gives a nicer finish.

Have a chat to your local shop, they'll run it up when they have a bit of
free time.  This is usually a 'case of beer' type job.  Typical machining
cost here is $100/h, so maybe half hour + a few dollars for materials.  $50
is about 20 pounds.  A shop with a CNC mill could knock that out in 5
minutes.

As someone else mentioned, you can buy small Chinese-made (Google Seig) for
not much more than 200 pounds.

Tony


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