I’ve seen some layouts where a lake or river comes out to the edge of the layout, and there is a smooth cross-section of the water area running from the stream bed up to the surface. These are generally made with something like Envirotex.
How is this done? I’d imagine that some sort of edge plate is used to keep the Envirotex from running out at the edge of the layout, and then it’s removed once all the pours are complete. What material can be used for this, so that it can be removed without damaging the Envirotex layers?
When I built my harbor/river I used a sheet of 1/8" plastic butted up to the edge of the table. I then used some modelers clay around the edge of the plastic as a seal to prevent any opening. Then I covered the edge of the plastic sheet with some duct tape. It seemed to work pretty well.
Hold that. before I put on the plastic I ran some double stick tape to the edge, then added the plastic, modelers clay. Once the resin dried I was able to remove the plastic and tape.
Since you have been helping me out in another area I will throw in something I learned today. I wathced a mr video and they were poring the water for the beer line. What they did was take some strip styrene(3/16" I think, But I guess any thickness would work). They took blue painters tape and taped the styrene to the facia board they used for a clean edge to bolt 2 pieces together. They they used a clear caulking along the inside edge to seal the crack between the styrene and layout. When all was dry they just removed the tape and peeled off the styrene. The caulk provided a good seal and if any gets left behind it is clear so you won’t see it. Hope this helps