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 Post subject: DAPing 4# Foam
PostPosted: Wed May 21, 2014 6:24 am 
Slayer
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Location: Carbondale, IL
Started Fighting: 02 Apr 2006
Realm: Carthage
Unit: Clan of the Hydra
Favorite Fighting Styles: Red Sword - S&B - Florentine
For a while now, I've been using the gray Gold's Gym puzzle mat (4# EVA) from Wal-Mart for the box on just about all of my weapons. Sometimes I route it, sometimes I do a regular box build, depending on what I'm building. I've never sanded down the ridges on it.

The problem I'm having is getting good, lasting adherence when DAPing it. It seems like I'm using a lot of DAP, but the last few weapons I've built have had core separation within a month or so of use.

Are the ridges on the foam causing this problem, or is there some trick to dealing with 4# foam?

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 Post subject: Re: DAPing 4# Foam
PostPosted: Wed May 21, 2014 11:04 am 
Boo Radley
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Joined: Sun Jan 04, 2009 11:36 pm
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Location: Central IL
Started Fighting: 03 Jan 2009
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Favorite Fighting Styles: Boot and Bottle
My experience using the 4# Harbor Freight stuff is that the foam just drinks the DAP. I generally put a coat on the 4#, put a coat on the blue I'm using, and then another coat on the 4# for it to be good to go.

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 Post subject: Re: DAPing 4# Foam
PostPosted: Fri May 23, 2014 2:09 pm 
Forum Gordon Ramsay
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two coats is the way to go, also mixed with thinner and use a paint gun

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 Post subject: Re: DAPing 4# Foam
PostPosted: Sun May 25, 2014 11:05 pm 
Slayer
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Joined: Tue Sep 05, 2006 7:21 pm
Posts: 1029
Location: Carbondale, IL
Started Fighting: 02 Apr 2006
Realm: Carthage
Unit: Clan of the Hydra
Favorite Fighting Styles: Red Sword - S&B - Florentine
Thanks for the tips, guys. Definitely going to try doing the two coats.

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 Post subject: Re: DAPing 4# Foam
PostPosted: Sun Feb 01, 2015 12:06 am 
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Realm: Dun Abhon
Favorite Fighting Styles: Florentine, sword and board, archery
I've switched to using hot glue instead of DAP. If you read the warning label on DAP there are some serious health risks that come with using it. Also I like that hot glue dries really quick. I haven't had any issues with separation though I have heard that there can be problems using it in the cold. Has anyone else on here tried hot glue?

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 Post subject: Re: DAPing 4# Foam
PostPosted: Sun Feb 01, 2015 12:34 am 
Boo Radley
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Joined: Sun Jan 04, 2009 11:36 pm
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Location: Central IL
Started Fighting: 03 Jan 2009
Realm: Grond
Unit: Sons of Sylas
Favorite Fighting Styles: Boot and Bottle
Thorne the mercenary wrote:
I've switched to using hot glue instead of DAP. If you read the warning label on DAP there are some serious health risks that come with using it. Also I like that hot glue dries really quick. I haven't had any issues with separation though I have heard that there can be problems using it in the cold. Has anyone else on here tried hot glue?

Hot glue will pop in the cold, and it isn't flexible. Just DAP in a ventilated area, or wear a particulate mask. Or both. The hazards are there, yes, but the benefits are too. Grab a fan, open a window, have at it.

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 Post subject: Re: DAPing 4# Foam
PostPosted: Sun Feb 01, 2015 9:11 am 
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If you have access to a bandsaw (preferably with a fence to keep it even) or belt sander, taking the ridges/texture off the surface seems to help a lot. I haven't had any problems with 4# separating since I started cutting off a very thin layer of the foam with my bandsaw to remove all the texture. (The 4# I use is 3/4" thick, so the small loss in thickness isn't generally a problem.)

Two coats of DAP is still usually a good idea, though. Once the first coat "dries", the second coat will sit on top of it rather than getting soaked in all the way.


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