Gunpla Build Surface

Saw a builder using a surface with a cutting mat and another surface with holes for nubs to fall into. Didn't want to purchase it so I designed my own. The holes are 6 mm wide so nubs should fall in easily. I did notice some parts can fall in if they are tiny enough. I added magnet holes to put 10x3mm magnets around the base to add attachments later like manual holder and side cutter holder.