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Casting & Stabilization Making your own blanks & stabilizing wood blanks.


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Old 11-09-2011, 11:25 PM   #11 (permalink)
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Curtis, this is a great post!! But...can you decode the terms...shrinkage, shore, Elongation and so on. With a post of this detail, all the stuff that it means would be cool. Thank you sir!!!
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Old 11-09-2011, 11:36 PM   #12 (permalink)
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Curtis, this is a great post!! But...can you decode the terms...shrinkage, shore, Elongation and so on. With a post of this detail, all the stuff that it means would be cool. Thank you sir!!!
Jim,

I did! See the first part of the post under definitions!
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Old 11-09-2011, 11:38 PM   #13 (permalink)
 
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Ok, do you have the formula for transparent aluminum?
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Old 11-10-2011, 01:01 AM   #14 (permalink)
 
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Great post Curtis. I was wondering if you have the same information about the West System 105 Epoxy and hardeners?

Dave
Well, since West Systems epoxy is not a casting resin, I did not include it. However, I do have the info handy so here it is!

West System 105 with 205 Fast Hardner:
Pot Life: 9-12 minutes
Viscosity: 975 CPS
Cure to solid (thin film, thicker applications will cure faster): 6-8 hours
Shore D: 83
Shrinkage: NA
Elongation: 3.4%
Temperature Resistance: 118 F

West System 105 with 206 Slow Hardner:
Pot Life: 20-25 minutes
Viscosity: 725 CPS
Cure to solid (thin film, thicker applications will cure faster): 10-15 hours
Shore D: 82
Shrinkage: NA
Elongation: 4.5%
Temperature Resistance: 123 F

What else ya got? :)

Hope that helps some!

The 207 hardener that makes it clear. Sorry I should asked for all 3 the first time around.

BTW.....what a difference in viscosity. That could be a BIG factor for some casts....Hmmm.

Dave
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Old 11-10-2011, 02:19 AM   #15 (permalink)
 
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Great info.
You posted that for the clear resins that vacuum or pressure is needed to remove bubbles.

I keep hearing vacuum for stabilizing and pressure for casting. My pressure pot goes to 50 and I have your chamber. Which is better for removing bubbles?

Jorge
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Old 11-10-2011, 02:23 AM   #16 (permalink)
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Pressure without a doubt. I stated vacuum because that it what Alumilite says. I have found no use for vacuum when casting with Alumilite!

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Great info.
You posted that for the clear resins that vacuum or pressure is needed to remove bubbles.

I keep hearing vacuum for stabilizing and pressure for casting. My pressure pot goes to 50 and I have your chamber. Which is better for removing bubbles?

Jorge
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www.TurnTex.com
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Old 11-10-2011, 03:10 AM   #17 (permalink)
 
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Great info Curtis thanks you. May i suggest that this text be put in the WIKI section under "Allumilite" . i think this information shoud be kept as a reference.

Just my .02
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Old 11-10-2011, 06:12 AM   #18 (permalink)
 
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Just curious for reference, Curtis but do you know the Elongation % of PR?

To me the 1% difference between clear and water clear means a tiny amount, however when I do not know the % of the comparison it is hard to make an educated analysis.
I included data on PR at the bottom of the list. Silmar 41 has an elongation of 1.5%
Wow big difference. Thanks for the info!.
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Old 11-10-2011, 04:21 PM   #19 (permalink)
 
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Never mind on the added info Curtis.....I managed to find it on the West System website after a bit of clicking and searching.

West System Properties

Dave
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Old 11-10-2011, 04:56 PM   #20 (permalink)
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Never mind on the added info Curtis.....I managed to find it on the West System website after a bit of clicking and searching.

West System Properties

Dave
One thing to point out, Dave, at least for others, is that West Systems is a laminating epoxy, not a casting epoxy. Sure, it may work for casting but is not designed for it.
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www.TurnTex.com
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