TS's lockdown diary

 Interesting to see this, as I have considered cutting out frames in (3mm) acrylic - this doesn't suffer the problems of warping, though finer parts are more likely to break (having done 16mm scale ornate Caledonian Railway benches).  It definitely opens up interesting possibilities for creating chassis for locos where no commercial one is suitable

9 hours ago, Caley 439 said:

 Interesting to see this, as I have considered cutting out frames in (3mm) acrylic - this doesn't suffer the problems of warping, though finer parts are more likely to break (having done 16mm scale ornate Caledonian Railway benches).  It definitely opens up interesting possibilities for creating chassis for locos where no commercial one is suitable

3mm acrylic might be workable, though possibly not in OO - you run out of space to fit a motor and gears very quickly (the outside edges of most chassis are around 12mm apart). 16mm might be good though, you could definitely do the gears in it too (though delrin would still be best for gears). I've got another plan though that appears to be working using a different material, but I don't want to give away too much until I know it works!