Casting without pressure - International Association of Penturners
     International Association of Penturners
Pens for Service Members
 
Support The IAP

Go Back   International Association of Penturners > Community Forums > Blank Making > Casting & Stabilization
  Forgot Password
Register FAQ Members List Search Today's Posts Mark Forums Read
Casting & Stabilization Making your own blanks & stabilizing wood blanks.


Logged on members can hide ads!

Welcome to penturners.org!

You've found the home of The International Association of Penturners. You are currently viewing our site as a guest, which gives you limited access to view discussions, photos, and library articles.

Consider joining our community today. You'll have full access to all of our content, be able to enter our contests, find local chapters near you, and post your questions and share your experience with our members all over the world.

Membership is completely free!!

If you have any problems with the registration process or your account login, please contact us.

Reply
 
LinkBack Thread Tools Display Modes
Old 12-05-2017, 11:50 AM   #1 (permalink)
 
Join Date: Jul 2016
Location: Louisville, KY
Posts: 40
Photos: 1

Default Casting without pressure

So, space in my shop is a premium, but I want to start doing some casting. Is there a resin that does not require pressure? I do not have a pressure pot or an air compressor, nor do I really have the space for either.
Thank you....
SSchamel is offline   Reply With Quote Top
Old 12-05-2017, 11:56 AM   #2 (permalink)
KCW
 
KCW's Avatar
 
Join Date: Dec 2014
Location: Lincoln, NE
Posts: 367
Photos: 13

Default

Quote:
Originally Posted by SSchamel View Post
So, space in my shop is a premium, but I want to start doing some casting. Is there a resin that does not require pressure? I do not have a pressure pot or an air compressor, nor do I really have the space for either.
Thank you....
I started with polyester resin, and you do not need a pressure pot to cast with it.
KCW is offline   Reply With Quote Top
Old 12-05-2017, 12:49 PM   #3 (permalink)
 
Join Date: Jan 2015
Location: Centennial, CO
Posts: 1,504
Photos: 5

Default

I also use PR, most of the time w/o pressure on simple pen blanks. I try to mix slowly so as not to introduce air into the PR. If I am casting PR with pieces of wood or other materials I do this under pressure just to allow better penetration into the objects.
tomtedesco is offline   Reply With Quote Top
Advertisement
Old 12-05-2017, 12:55 PM   #4 (permalink)
 
Dalecamino's Avatar
 
Join Date: Jan 2008
Location: Indianapolis, In.
Posts: 11,954
Photos: 219

Default

You can create some vibration on your bench. Like turn on a scroll saw.
__________________
Chuck Hutchings
Indianapolis, In.
You can see some pens at http:www.facebook.com/chuckspens
Likes: (1)
Dalecamino is offline   Reply With Quote Top
Old 12-05-2017, 01:40 PM   #5 (permalink)
 
Mike@CSUSA's Avatar
 
Join Date: Oct 2012
Location: Utah
Posts: 28
Photos: 0

Default

You don't need pressure for Polyester Resin. But I still put my blanks in a pressure pot (without pressure) to help contain the smell.
Mike@CSUSA is offline   Reply With Quote Top
Old 12-05-2017, 01:54 PM   #6 (permalink)
 
EBorraga's Avatar
 
Join Date: Oct 2009
Location: Louisville, KY
Posts: 3,226
Photos: 61

Default

Dude, you can always come by the house. I have all of your casting needs!! I have PR and Alumilte :) And I may have some extra molds you can use.
__________________
I drink because I'm lonesome. I lonesome because I drink. - Aaron Lewis (Between Whiskey and You)

Check out my Facebook page at https://www.facebook.com/EBWoodworx/
Likes: (2)
EBorraga is offline   Reply With Quote Top
Old 12-05-2017, 08:27 PM   #7 (permalink)
 
TattooedTurner's Avatar
 
Join Date: Aug 2016
Location: Surprise, Arizona
Posts: 1,046
Photos: 246

Default

You can get away with no pressure using PR, but don't expect perfect blanks every time. It helps a lot if you put the bottle of resin in a bucket of warm water which makes the resin thinner and allows the air bubbles to escape more easily. It also helps if you cast in a block mold and vibrate it a bit by hand. Using vertical pvc molds means any air bubbles down in it have a lot farther to go to get to the top. In all honesty, I was never happy using PR even with vacuum, using pressure guarantees void free blanks 99% of the time. The 1% it doesn't is probably caused by not getting the molds in the pot and up to pressure in time.
__________________
Jay
TattooedTurner is offline   Reply With Quote Top
Old 12-11-2017, 01:50 PM   #8 (permalink)
 
Join Date: Dec 2012
Location: Mebane, North Carolina
Posts: 373
Photos: 0

Default

I don't have a pressure vessel in my shop either. I am slowly getting back into turning and will eventually get my casting setup out, but I did casting without pressure. I used heat, both to thin the resin out to get air out and because it cures much faster when it's warm. I have an old crock pot I got at a yard sale.

I would get the crockpot warm then put the molds in it and pre-measure/mix the resin and the tint and get the resin warmed up, then mix in the catalyst and pour. As long as I was careful mixing and pouring I didn't have problems.
the only issues I had were some embedments making sure resin filled in everywhere.
A pressure pot would help with that.
crokett is offline   Reply With Quote Top
Old 01-04-2018, 11:09 PM   #9 (permalink)
 
Join Date: Feb 2015
Location: Georgia
Posts: 6
Photos: 0

Default

Quote:
Originally Posted by SSchamel View Post
So, space in my shop is a premium, but I want to start doing some casting. Is there a resin that does not require pressure? I do not have a pressure pot or an air compressor, nor do I really have the space for either.

Thank you....


Liquid Diamond


Sent from my iPad using Penturners.org mobile app
drperp is offline   Reply With Quote Top
Old 01-05-2018, 09:19 AM   #10 (permalink)
 
rd_ab_penman's Avatar
 
Join Date: Jun 2007
Location: Red Deer, Alberta, Canada.
Posts: 1,285
Photos: 8

Default

Liquid Diamonds works great without using a pressure pot.

Les
Attached Thumbnails
33a-liquid_diamond.jpg  
__________________
Innovation is the process that renews something that already exists and not, as is commonly assumed, the introduction of something new.
Likes: (1)
rd_ab_penman is offline   Reply With Quote Top
Related Content
Logged on members can hide ads
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT -5. The time now is 06:05 PM.

Powered by vBulletin® Version 3.7.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0

Content Copyright © 2003-2018 by Penturners.org, LLC; All Rights Reserved
Terms Of Service   Acceptable Use Policy