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Carving Plaster
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 Posted: Mon May 21st, 2012 07:33 pm
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smokebox



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HIYA Everyone..


I was just looking for tools to carve plaster or hydrocal and wanted to know if this would be what I should get or is there something better to do this with?
http://www.micromark.com/3-piece-scriber-and-scraper-set,7763.html

I would like to make a cut stone bridge, or piers for a girder bridge, most likely about 2 feet long for an O scale diorama I'm thinking about making. I has to be sorta big because there will be an On30 line and a stream going under it.

Rob Wright
smokebox

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 Posted: Mon May 21st, 2012 08:11 pm
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W C Greene
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Why not use a regular old Exacto #11 blade or similar? Also, if you are friends with a dentist, he can give you some fine tools that work well on plaster, etc.
Woodie



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 Posted: Mon May 21st, 2012 10:53 pm
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smokebox



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HIYA

If I use the knife, should I file down the point or leave it pointed and make 2 shallow cuts to form the grout joint?
Or just cut one striaght down line?
I have never carved on paster so this is all new to me..

Rob

Last edited on Mon May 21st, 2012 10:54 pm by smokebox

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 Posted: Tue May 22nd, 2012 12:07 am
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W C Greene
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An old #11 which doesn't cut styrene well anymore is a good candidate for a plaster tool. Advice? Just sit down and do a "test" piece.

Woodie



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 Posted: Tue May 22nd, 2012 12:31 am
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smokebox



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HIYA..

I have a set of knife blades that went to Afganastan with me on my last deployment.. They have collected a coat of rust..:doh::doh::doh:
This just might be the ticket to get this project started!!
Plus I'm always up to learning a new trick..

Thanks,
Rob

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 Posted: Tue May 22nd, 2012 06:36 am
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Paladin
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Try carving the plaster while it is still a little green, that is not fully cured and hard.

You will need to go back and clean up the fine detail.

Works for me.

Don



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 Posted: Tue May 22nd, 2012 01:24 pm
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mabloodhound



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Just a note Rob, many modelers are now using the pink or blue foam board and carving that. Much easier to carve and final results are just as good.
As for tools, yes, the dentist throws away all his old dull tools. Also, Harbor Freight has some scribing tools for a lot less money.



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 Posted: Wed May 23rd, 2012 08:03 pm
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RyRiverRR



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Hey Rob I put these on the Ry River thread but this topic was right up the plaster carving alley.










I got the top two at a train show about 3 years ago not much $$$ if I can recall.  They have been very useful.  i mad ethe lower one out of stainless and put a point on it.  That one seems to do the best job in giving me a mortar joint.

I have tried to carve plaster in it's green stage but I do most of my pouring late at night so Im in bed at that stage.  haven't had to many problems in carving when it gets hard, just make sure the plaster cast is flat with no movement at all, or it will crack :bang: when you go to carve it.  Had that happen more than I want to say.

Ryan



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 Posted: Thu May 24th, 2012 12:52 am
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elminero67



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I bought a collection of carving tools-then always went back to a utility knife and a beater chisel. 99% of my Gila Canyon was carved with the utility knife:



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 Posted: Thu May 24th, 2012 01:25 am
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madmike3434



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tremendous rock work, great stone carving and the colouring is also top notch.

 

madmike3434

mike lynch

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