I need to find a source for a custom thin non-metallic plastic spacer about 100 x 50mm in size and about 0.5mm thick. Not a simple rectangle but a complex shape with cutouts for components, mounting holes etc. This is to act as a PCB standoff and will let me use an off the shelf IP68 enclosure, as one of the components on the rear of the board is a slight interference fit and I don't really want to go the route of custom enclosures or machining right now.
I'm not sure which route to go: 3D printed parts or laser-cut parts from sheet material, so would be interested if anyone has done anything similar, and/or knows any companies in the UK who can help? Quantities are maybe low-hundreds and lead time is more sensitive than cost. I already have CAD files.