Walterjn next time, disassemble it, modify it so the glass is easily removable.
I'm ok at mechanics and maybe a little carpentry, but this thing is made of small pieces of wood and I don't have the tools or skills for the intricate stuff.
I've completely disassembled a number of Yamaha 2-stroke engines to rebuild top ends and repair transmissions and clutches, but carpentry........nah.