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Old 07-20-2008, 04:52 AM
1231134 1231134 is offline
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Thumbs up Weird canvas ?

This smells like rubber boots and feels like plastic tablecloth but it must be canvas.

Question: How can i prepare this thing ? (will it last more than linen ?)

Last edited by 1231134 : 07-20-2008 at 04:56 AM.
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Old 07-20-2008, 05:31 AM
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WC Lee WC Lee is offline
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Re: Weird canvas ?

that doesn't look like any canvas I ever saw .... not for painting anyhow

to prepare it, mount it on board or stretch onto stretchers then several coats of acrylic gesso (allowing each coat to dry before putting another coat) for the simplest method. For a lazier method if it is going to be for practicing or probably won't be keeping, tape it onto a board and several coats of gesso. It can always be mounted afterwards if so desire.
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Last edited by WC Lee : 07-20-2008 at 05:38 AM.
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Old 07-20-2008, 07:46 AM
1231134 1231134 is offline
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Re: Weird canvas ?

Taken from 60x50 (prob.chinese) printed paintings. (costed 2,50€\per 1=4$)
- I thought it was linen
- Do i need some kind of special gesso ? (that will stick into plastic fibers ?)

Last edited by 1231134 : 07-20-2008 at 08:13 AM.
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Old 07-20-2008, 09:02 AM
joqua joqua is offline
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Re: Weird canvas ?

About 18 months ago I decided to give 100 percent POLYESTER canvas a try, and have never looked back. I'll never again use anything else, as long as it remains available in an artist grade material.

Your example looks to be similar, or perhaps a fiberglass material. The mechanical look of the weave is similar to that of the polyester I am using. Not sure what the thread count is for mine, but it's not unlike heavy-duty cotton canvas of about 12 oz. weight.

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Old 07-20-2008, 11:50 AM
1231134 1231134 is offline
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Re: Weird canvas ?

Can someone recommend a good primer that is suitable for polyester ? (Ordinary water based gesso is for oil free surfaces only.)

Last edited by 1231134 : 07-20-2008 at 11:53 AM.
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Old 07-20-2008, 12:57 PM
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Re: Weird canvas ?

Hi,

You could get an adhesion promotor for plastics that usualy comes in spray or to be applied with spraygun.
That's what I know.
Then you could apply a thinner based 2K primer in spray or with a spraygun.
I know that this sounds a bit off-art area, but that's a way to do it.
Now lets wait for other technical opinions.

Kind regards,

José
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Old 07-21-2008, 04:12 AM
1231134 1231134 is offline
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Re: Weird canvas ?

1.) adhesion promotor for plastics*
2.) a thinner based 2K primer*

*- Best brand(s) ? (available in Europe)
- How well oil paints stick into surface created with these ?

--------------------------------------------------------------
http://www.chromaonline.com/chroma/p...lyester_canvas
Fredrix: Red Lion Polyflax Canvas
- I guess this is my choise when buying the next canvas roll.
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Old 07-21-2008, 11:44 AM
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Re: Weird canvas ?

Quote:
Originally Posted by 1231134
Can someone recommend a good primer that is suitable for polyester ? (Ordinary water based gesso is for oil free surfaces only.)

polyester NEEDS no primer
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Old 07-21-2008, 05:23 PM
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Bringer Bringer is offline
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Re: Weird canvas ?

Hi,

An adhesion promotor is available from 3M with ref. 5917.
Automotive paint manufacturers also sell them.
However loop says that polyester doesn't need a primer.
Anyway, here's something quite interesting that I found out (even if a bit out of this league) :
http://www.patentstorm.us/patents/54...scription.html
I do think that a primer although sometimes not an uncontournable need, does provide a better adhesion than using paint directly. This in most cases, but I cannot give a good opinion about polyester.

Kind regards,

José
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