We have laid a penny floor and 42 hours ago we sealed it with the glasscast 3 resin. However we are  little bit concerned that 42 hours later, although most of it is rock solid there are still a number of sticky patches remaining is this normal??

What a nightmare that picture shows! I can see how you must be frustrated with the end result, especially with the time laying the pennies down - especially in that special layout.   Unfortunately we can only see that some form of mixing error has occurred to cause that result.  Some bits, as you say, have cured properly on the surface which tells me that some bits of the resin did fully cure and were hence fully mixed.  I understand you mentioned that you were careful to follow the instructions and chances are it's just a simple mistake or oversight that has ruined the project.  It sounds like it is something simple like several containers were mixed up and in a simple error, one was missed  and made its way onto the floor thus meaning the resin all mixed together to make a mass that in places is fine and the rest not fine.  It would, to an extent make sense for some of the mixed resin to rise as it settles and begins to cure which could explain the reason why the top in many areas seemed fine.  Or it could be the last bucket poured out was fully mixed and covered over the poorly mixed batch. We know of a few people who have made similar mistakes. I did something similar when doing a lego table with GlassCast, although luckily I realised long before it was curing so recovery was a bit easier.

Without having been there and with the elapsed time, I doubt it would be possible to work out exactly what happened. The next focus is to try and recover the floor as best you can. If the whole lot is peeling off as in the photo, peel off as much of the resin as you can.  Then using a plastic scraper (even a cut up old milk container or similar), scoop up and remove as much of the runny resin as you can.  Then you would need to use rags to get the floor as dry as possible.  It will still likely be tacky at this point from acetone residue. You can then use a cloth made slightly wet, but not soaked, in acetone to break down and remove the remaining tacky feel.  Don't go too liberal with the acetone or rub too hard as it is quite a strong cleaning solvent and you wouldn't want to clean up the tarnished pennies.  Just wiping over should be enough to get rid of most of the tack.  Once all dried and fully clean, you would be ready to go again.  If you have any more questions then please let me know.


Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant