Does anyone have any advice or tips on creating a smooth edge when casting resin? I’m new to resin and have not started my project yet but have seen so many pieces that dry with a lip. I know that can be sanded down but I’m also wondering if there’s a way to make it smoother when casting so there won’t be as much sanding to do after.
I haven’t done resin casting so cant help with ideas to prevent the surface tension from creating a burr, and I hate sanding. You might try filing the edge before sanding, it will remove material faster than sanding. But I don’t think Ive seen a sharp file yet at the makerspace. If you cast something I could bring in a few to try to help decide what to buy. Nice thing about a file is you can take high spots out easier than sanding which tends to follow contours
It all has to do with the mold. If the mold has sharp corners then the resin will. I have a couple of silicone molds that don’t give me any sharp ones but my pen molds have very sharp ones
To camp on to Randy’s idea… if you have a spokeshave you can radius resin with it. You’ll want it to be freshly sharpened and set for a light cut. I just tried mine on a piece of scrap and it leaves a pretty clean surface