Glasscast 3 over postcards & paint

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Glasscast 3 over postcards & paint

Author	Message
tilegeek	t tilegeek posted 5 Years Ago HOT Topic Details
t Group: Forum Members Posts: 4, Visits: 7	Good morning, recently installed a penny floor using Glasscast 3 and couldn’t be happier with the result. Came up with idea of putting map in the entry floor with some postcards and pouring Glasscast 3 over it. Have a few concerns/ questions- there are going to be areas of the underlayment (3/8” AC plywood) that will not be covered by the map/ postcards. My thought was to simply paint entire area either white or black with latex paint to seal wood and then lay down map & postcards. Is it ok to use latex paint for this or should I use something else. Should I glue down the map & cards prior to pouring to eliminate shift or even product getting under items and if so what should I use for adhesive? Thank you in advance for your time, Mike.
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oekmont	oekmont posted 5 Years Ago HOT Post Details
Group: Forum Members Posts: 550, Visits: 27K	I would use either black epoxy or polyurethane coating, like it is available for skinning purposes. Latex paint isn't solvent free, wich can end up in bubbles or milky resin. For the same reason I would use 5 min epoxy to glue them down. I would check if the postcards are resistant to the epoxy. I had cloths and prints that completely changed colour after epoxy exposure.
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Warren (Staff)	Warren (Staff) posted 5 Years Ago HOT Post Details
Group: Administrators Posts: 2.5K, Visits: 8K	A good point Okemont has highlighted is colour change of the resin. Many paper grades will soak up resin going semi-translucent or wetting out the colours. I would recommend testing a small piece to be sure. If it does soak in, coating the paper with a thin layer of PVA wood glue works as a good sealant. In a thin brush on layer, it dries clear. Warren Penalver Easy Composites / Carbon Mods - Technical Support Assistant
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tilegeek	t tilegeek posted 5 Years Ago HOT Post Details
t Group: Forum Members Posts: 4, Visits: 7	+x oekmont - 3/12/2019 2:03:03 PM I would use either black epoxy or polyurethane coating, like it is available for skinning purposes. Latex paint isn't solvent free, wich can end up in bubbles or milky resin. For the same reason I would use 5 min epoxy to glue them down. I would check if the postcards are resistant to the epoxy. I had cloths and prints that completely changed colour after epoxy exposure. Thank you for the advice, poly will work instead of paint for the area.
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tilegeek	t tilegeek posted 5 Years Ago HOT Post Details
t Group: Forum Members Posts: 4, Visits: 7	+x Warren (Staff) - 3/12/2019 5:04:58 PM A good point Okemont has highlighted is colour change of the resin. Many paper grades will soak up resin going semi-translucent or wetting out the colours. I would recommend testing a small piece to be sure. If it does soak in, coating the paper with a thin layer of PVA wood glue works as a good sealant. In a thin brush on layer, it dries clear. Thank you for the advice & heads up. I will definitely test the map prior to pouring.
	Reply Like 2
tilegeek	t tilegeek posted 5 Years Ago HOT Post Details
t Group: Forum Members Posts: 4, Visits: 7	+x oekmont - 3/12/2019 2:03:03 PM I would use either black epoxy or polyurethane coating, like it is available for skinning purposes. Latex paint isn't solvent free, wich can end up in bubbles or milky resin. For the same reason I would use 5 min epoxy to glue them down. I would check if the postcards are resistant to the epoxy. I had cloths and prints that completely changed colour after epoxy exposure. Sorry, still working through this- would acrylic paint be a better choice? Thank you again.
	Reply Like 3
oekmont	oekmont posted 5 Years Ago HOT Post Details
Group: Forum Members Posts: 550, Visits: 27K	No, anything without a separate hardener component is somehow soluted and will outgas for a long time. You could use the epoxy you already have with black pigments to get a black 2k paint.
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