From: John Eric Voltin (jevoltin@agile-technology.com)
Date: Fri Nov 16 2007 - 15:55:14 EET
Wow, those are some very interesting parts. I bet they will become part of
a nice model train.
Both parts seem relatively complex and require some small detail. The
machines that make wax patterns of jewelry may be able to provide the detail
required, but these parts are too large to be made in one piece. You might
be able to make these parts in sections and wax weld them prior to casting.
Of course, such a method is only approrpriate for low volumes due to the
labor requirements.
- John
John Eric Voltin
Senior Mechanical Engineer
Agile Technology
----- Original Message -----
From: "Bill Bedford" <billb@mousa.uk.com>
To: <rp-ml@rapid.lpt.fi>
Sent: Friday, November 16, 2007 2:35 AM
Subject: RE: [rp-ml] Investment casting
> On Wed, 14 Nov 2007 22:44:50 -0000, Warner, Pat wrote:
>
> [snip]
>
>> It may be worth posting a
>> generic geometry (if you can) and asking the list for comments from
>> experience.
>
> Thanks very much to for everyone's input on this, There have been a
> number of useful replies that I will be following up, though I have the
> feeling that I'm pushing the envelope in a different direction to most
> people. Just to show you all what I've put graphics of parts I would
> like to cast in here
>
> <http://w3w.mousa.uk.com//pictures/BLK1700 Frame.jpg>
> <http://w3w.mousa.uk.com//pictures/BLK1700 Bogie.jpg>
>
> These would be cast in brass
>
> The sizes are
>
> Frames 117 x 21 x 15 mm
> Bogie 32 x 23 x 8.5 mm
>
> The side frames on each should ideally be less than 1mm thick.
>
> --
> Bill Bedford
>
> "Nothing is as important as model railways and even that isn't very
> important"
>
> -some wiseguy somewhere
>
>
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