I think I've posted this link before for Tony when he was going through his 10" LX200 faze
... For all things Meade check out
MAPUG - Meade Advanced Products Users Group. Heaps of info collected there, including wedge designs (mostly commercial though). The
Baltic Wedge might give you a few ideas for your own design... Plus there's also good old Google.....
I did find some plans somewhere along the line though..... I'll have a dig around to see if I can find the link.