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the mekp is dark red and it turns the pink resin dark. back to the clear hardener now so it should be normal colored...
the rollers are 4" rated for 350# and get hung up on a couple cracks but so far work well. i kind of slapped this together so i wonder how long it'll hold up.
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Wow. I've never seen polyester resin that color. I thought it might be epoxy resin that had sat long enough for the hardener to turn dark. It gets about that color.
I used casters like yours on my gantry crane and on the cradle for my Hewes Bonefisher. I got them at Lowes for about $10 each. Fr. Frank is right. The larger diameter wheels roll a lot easier. The heavy duty casters I used for the dolly under my Seafari have 4" wheels and can be difficult to get started rolling. Then again, it weighs 3000lbs, so I should probably expect to have to give it a good shove to get it going.
Your 20 is looking good. Nice precision work on that deck. Looks like it fits like a glove.
Dave