Simple Electrolytic separator V1

I made electrolysis of water at home, but I wanted to catch hydrogen so I made this. Design is bulky and this is because I am still working on this project. So tell me in the comments what should be improved. Read everything before starting this project. Feel free to ask me about something that you are not sure or I didn't mention.Post processing:Sand the areas that you can, but not too much.Use something like epoxy resin on the inside to prevent water leaking.Put stainless steel dowel pins in holes. If they don't fit, use 5mm drill to make enough clearance. If this still occurs, sand dowel pins but not too much.Use glue that can be dissolved with acetone and glue dowel pins first, after that glue two bottom and top piece.Connect some sort of DC power. Where you connect ground there will be hydrogen and on the voltage will be oxygen.Bill of materials:2x Stainless steel dowel pins m5x30SandpaperEpoxy resinGlue that can be dissolved using acetoneBalloon for storing hydrogenSome sort of D