ravenlures Posted January 26, 2017 Report Share Posted January 26, 2017 Question: When you thin out a paint or a epoxy do you go by volume or by weight since the weight is different in all cases I know 20% is 20% but weight verses volume is not. Wayne Quote Link to comment Share on other sites More sharing options...
Musky Glenn Posted January 26, 2017 Report Share Posted January 26, 2017 I would measure out which ever way gives you the most thinner to add. But I would add only the amount that is the lesser of the two. If that doesn't look right then you can add the remainder of the thinner. 1 Quote Link to comment Share on other sites More sharing options...
BobP Posted January 27, 2017 Report Share Posted January 27, 2017 The only reason I thin epoxy is to make it brush on a little better, expel bubbles better, and extend the brushable time moderately. I do that only with denatured alcohol by dipping my brush in it and shaking a few drops into the epoxy after mixing, then blending it in. A little goes a long way. 1 Quote Link to comment Share on other sites More sharing options...
Lurenerd Posted January 27, 2017 Report Share Posted January 27, 2017 15 hours ago, BobP said: The only reason I thin epoxy is to make it brush on a little better, expel bubbles better, and extend the brushable time moderately. I do that only with denatured alcohol by dipping my brush in it and shaking a few drops into the epoxy after mixing, then blending it in. A little goes a long way. BobP is right, a little goes a long way. I use plastic cups with measurements on them for the epoxy mix and an eyedropper for a few adding a few drops of denatured alcohol into the mix. Stir thoroughly. Also, I found that putting a larger plastic cup upside down over the epoxy filled measuring cup and exhaling into the larger cup then letting the mix sit covered for a short time quickly gets rid of any bubbles from the stirring. Works great and adds a little extra working time before the mix begins to harden. Quote Link to comment Share on other sites More sharing options...
RayburnGuy Posted January 27, 2017 Report Share Posted January 27, 2017 Several years ago I got a crazy idea and wanted to see if I could spray epoxy through an airbrush. You can imagine how much DA that was needed to thin the epoxy down so it was thin enough to spray with an airbrush. I don't have any scientific measuring equipment so doing any type of test to check the hardness of the epoxy after it cured was not an option, but as far as I could tell by touch it seemed to cure out just fine. Of course it took a good bit longer to cure, but it did cure and seemed to hold up as well as epoxy that had been brushed on. This was a one time experiment just to see what would happen and since I didn't want to take a chance on having epoxy set up in the airbrush and ruin it this was never repeated. Ben 1 Quote Link to comment Share on other sites More sharing options...
Basseducer Posted January 27, 2017 Report Share Posted January 27, 2017 I used to spray epoxy all the time. I would mix up my batch then thin it 50/50 with Xylene. I used a Badger 250 external mix airbrush. Cleaning was easy with this gun. Quote Link to comment Share on other sites More sharing options...
nedyarb Posted January 30, 2017 Report Share Posted January 30, 2017 I weigh the hardner and epoxy when i first open the package. Generally the hardner weighs 200 grams and the epoxy weighs 180 grams. So when I use it I weigh out 10 grams hardner and 9 grams epoxy Quote Link to comment Share on other sites More sharing options...
nedyarb Posted January 30, 2017 Report Share Posted January 30, 2017 I just realized that had nothing to do with the original question....carry on!!!! Quote Link to comment Share on other sites More sharing options...
RayburnGuy Posted January 30, 2017 Report Share Posted January 30, 2017 9 hours ago, nedyarb said: I just realized that had nothing to do with the original question....carry on!!!! It's still good to know. Ben Quote Link to comment Share on other sites More sharing options...
ravenlures Posted January 30, 2017 Author Report Share Posted January 30, 2017 Thanks to all. Wayne Quote Link to comment Share on other sites More sharing options...
