Messages In This Digest (8 Messages)
- 1a.
- I need some shrinkage! From: barry@railrec.com
- 1b.
- Re: I need some shrinkage! From: D Ray East
- 1c.
- Re: I need some shrinkage! From: Tom Banwell
- 1d.
- Re: I need some shrinkage! From: DOC
- 2a.
- Re: roto-caster: trying to get my bearings... From: The Tellurian
- 2b.
- Re: roto-caster: trying to get my bearings... From: DOC
- 3a.
- Re: Small prototype piece help please From: iwillinvent
- 3b.
- Re: Small prototype piece help please From: iwillinvent
Messages
- 1a.
-
I need some shrinkage!
Posted by: "barry@railrec.com" barry@railrec.com locoartist42
Wed Feb 13, 2008 1:40 pm (PST)
Hi All,
I have some boxcars to make and I need to shrink them about 6% to
get them to the proper size. Can someone suggest a resin, RTV, or
something else to shrink these parts.
Thanks Barry
--------------------- --------- --------- --------- --------- -
This message was sent using IMP, the Internet Messaging Program.
- 1b.
-
Re: I need some shrinkage!
Posted by: "D Ray East" dr.east@sbcglobal.net drayegon
Wed Feb 13, 2008 6:21 pm (PST)
I just normally give it to my wife to put in the laundry. Seems that by
the second or third time it is almost to small to fit. Actually that is
the kidding part of this.I do the laundry. That is even worse. Your
biggest problem is trying to get a completely generalized shrinkage.
there is almost nothing that will shrink all over by a certain amount.
You could try putting pieces of clay over the top of the items then when
you remove them cut to a smaller size. you best bet is of course to
completely make a new item.
73
drat
barry@railrec.com wrote:
>
> Hi All,
> I have some boxcars to make and I need to shrink them about 6% to
> get them to the proper size. Can someone suggest a resin, RTV, or
> something else to shrink these parts.
> Thanks Barry
>
> --------------------- --------- --------- --------- --------- -
> This message was sent using IMP, the Internet Messaging Program.
>
>
[Non-text portions of this message have been removed]
- 1c.
-
Re: I need some shrinkage!
Posted by: "Tom Banwell" TomBanwell@lumicast.com mentalblow
Wed Feb 13, 2008 7:24 pm (PST)
I would cast it in wax and remold. That will get you about 6%.
Tom
Tom Banwell Designs Inc
www.lumicast.com
www.tombanwell.com
--------------------- --------- --------- --------- ---------
----- Original Message -----
From: D Ray East
To: casting@yahoogroups.com
Sent: Wednesday, 13 February, 2008 6:20 PM
Subject: Re: [casting] I need some shrinkage!
I just normally give it to my wife to put in the laundry. Seems that by
the second or third time it is almost to small to fit. Actually that is
the kidding part of this.I do the laundry. That is even worse. Your
biggest problem is trying to get a completely generalized shrinkage.
there is almost nothing that will shrink all over by a certain amount.
You could try putting pieces of clay over the top of the items then when
you remove them cut to a smaller size. you best bet is of course to
completely make a new item.
73
drat
barry@railrec.com wrote:
>
> Hi All,
> I have some boxcars to make and I need to shrink them about 6% to
> get them to the proper size. Can someone suggest a resin, RTV, or
> something else to shrink these parts.
> Thanks Barry
>
> --------------------- --------- --------- --------- --------- -
> This message was sent using IMP, the Internet Messaging Program.
>
>
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
- 1d.
-
Re: I need some shrinkage!
Posted by: "DOC" doc@sympatico.ca torobots
Wed Feb 13, 2008 9:14 pm (PST)
There was some talk here a while back about a product called
Hydroshrink.
AFAIK it shrinks too much for your application but you might be
able to remold before it has lost all the water.
Or maybe just start with less water?
DOC
At 06:20 PM 2/13/2008 -0800, you wrote:
>I just normally give it to my wife to put in the laundry. Seems that by
>the second or third time it is almost to small to fit. Actually that is
>the kidding part of this.I do the laundry. That is even worse. Your
>biggest problem is trying to get a completely generalized shrinkage.
>there is almost nothing that will shrink all over by a certain amount.
>You could try putting pieces of clay over the top of the items then when
>you remove them cut to a smaller size. you best bet is of course to
>completely make a new item.
>
>73
>drat
>
><mailto:barry%40railrec. com>barry@railrec. com wrote:
> >
> > Hi All,
> > I have some boxcars to make and I need to shrink them about 6% to
> > get them to the proper size. Can someone suggest a resin, RTV, or
> > something else to shrink these parts.
> > Thanks Barry
> >
> > --------------------- --------- --------- --------- --------- -
> > This message was sent using IMP, the Internet Messaging Program.
> >
> >
>
>[Non-text portions of this message have been removed]
>
>
Buy my junk! http://www3.sympatico. ca/doc/robotone/ for-sale. html
- 2a.
-
Re: roto-caster: trying to get my bearings...
Posted by: "The Tellurian" the-tellurian@pppoe.ca thetellurian
Wed Feb 13, 2008 6:46 pm (PST)
Try Active Surplus on Queen.
Richard
DOC wrote:
> We have a place called TSC in the area. They are a farm supply store.
>
> There's also Princess Auto. It has some farm stuff and a fair bit of
> mostly lower grade tools.
>
> Sometimes they are really handy. But neither seem to stock smaller
> bearings or drive components.
>
> Neither carry #25 roller chain for example.
>
> Humm...
> I suppose I could try sprockets and chain but I like the timings
> belt solution better.
>
>
> Thanks,
> DOC
>
>
>
> At 09:19 PM 2/11/2008 -0800, you wrote:
>
>
>> Farm supply stores still understand that people build things, and often have
>> reasonable prices.
>>
>> On Feb 11, 2008 6:02 PM, DOC <<mailto:doc%40sympatico. ca>doc@sympatico. ca >
>> wrote:
>>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
- 2b.
-
Re: roto-caster: trying to get my bearings...
Posted by: "DOC" doc@sympatico.ca torobots
Wed Feb 13, 2008 8:54 pm (PST)
Used to be my favorite place. Especially before they moved
upstairs.
Did I ever see you there? :-)oo
I think they have some of the 220 belts that we need.
But didn't see any pulleys when I was there last week.
Reminds me there is another store up on Bloor. Run by an
ex Active guy.
Need to check it out.
Tanks,
DOC
At 09:45 PM 2/13/2008 -0500, you wrote:
>Try Active Surplus on Queen.
>
>Richard
>
>DOC wrote:
> > We have a place called TSC in the area. They are a farm supply store.
> >
> > There's also Princess Auto. It has some farm stuff and a fair bit of
> > mostly lower grade tools.
> >
> > Sometimes they are really handy. But neither seem to stock smaller
> > bearings or drive components.
> >
> > Neither carry #25 roller chain for example.
> >
> > Humm...
> > I suppose I could try sprockets and chain but I like the timings
> > belt solution better.
> >
> >
> > Thanks,
> > DOC
> >
> >
> >
> > At 09:19 PM 2/11/2008 -0800, you wrote:
> >
> >
> >> Farm supply stores still understand that people build things, and
> often have
> >> reasonable prices.
> >>
> >> On Feb 11, 2008 6:02 PM, DOC
> <<mailto:doc%40sympatico. ca><mailto: doc%40sympatico. ca>doc@sympatico. ca >
> >> wrote:
> >>
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
>
Buy my junk! http://www3.sympatico. ca/doc/robotone/ for-sale. html
- 3a.
-
Re: Small prototype piece help please
Posted by: "iwillinvent" amy@nwcomputer.com iwillinvent
Wed Feb 13, 2008 8:56 pm (PST)
Actually, no. These are not what you are thinking of.
Thank you,
Amy
--- In casting@yahoogroups.com , DOC <doc@...> wrote:
>
> These the rubber things that fit on the back of the temples? Help
> keep the glasses from slipping off your face?
>
> Check some outdoor equipment stores. In Canada we have
> Mountain Equipment Coop. They sell mountaineering sun
> glasses with this type of rubber fittings.
>
> Last time I needed some they gave me a few. They wear out
> in about six months though. So I have stopped using them.
>
> DOC
>
>
> At 06:31 PM 2/12/2008 +0000, you wrote:
>
> >Hello. I am designing my first product. For part of this prototype, I need
> >an 1/8-
> >inch inner diameter tubular piece. The wall of the tube is not thick,
> >maybe 1/16- or 1/8-
> >inch. This piece is going over the side pieces of some eyeglasses frames,
> >so I need it to
> >stretch to fit, or I may slit it down the middle to make it easier to put on.
> >
> >I know this piece can be molded, but I am concerned about the expense. Is
> >there a less expensive way to do this for a prototype piece?
> >
> >Any information about creating this piece will be appreciated.
> >
> >Regards,
> >
> >Amy
> >
> >
>
> Buy my junk! http://www3.sympatico. ca/doc/robotone/ for-sale. html
>
- 3b.
-
Re: Small prototype piece help please
Posted by: "iwillinvent" amy@nwcomputer.com iwillinvent
Wed Feb 13, 2008 9:02 pm (PST)
Dear Mr. Brose:
I have tried the silicone fuel tubing. I like the idea, but the walls of the tubing are too
thick. I bought some at a hobby store in Hopkins.
Might it be available in a thinner-wall version?
Regards,
Amy
--- In casting@yahoogroups.com , Mike Brose <Mike@...> wrote:
>
> The silicone fuel tubing could be pretty close. It's light blue in color
> and usually available at any good hobby shop that carries RC models,
> etc. There are a couple of diameters available. It might be stretchy
> enough. Generally you can buy as little or as much as you need. They cut
> it off of a roll. Pretty inexpensive for small amounts.
>
> Cheers,
>
> Mike Brose
> http://www.puppetsandprops.com
>
>
> DOC wrote:
> > Or just use some bits of rubber tubing available from your
> > local hobby shop.
> >
> > DOC
> >
> >
> > At 03:18 PM 2/12/2008 -0800, you wrote:
> >
> >
> >> go to a cheap prototyper.
> >> <http://wickedresin.com/shop/ pc/viewcontent. asp?
idpage=5>http://wickedresin.com/shop/ pc/viewcontent. asp?idpage= 5
> >>
> >> get a good low price on your prototype.
> >> and then make the molds yourself for it.
> >>
> >> On Feb 12, 2008 10:31 AM, iwillinvent
> >> <<mailto:amy%40nwcomputer. com>amy@. ..> wrote:
> >>
> >>
> >
> >
> >
>
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