String through or top load bridge?

[bog]

Another good tip on top of what HereIsJT said, is to get some solid wood about 15mm thick about roughly the size of the bridge. I used some 80mm wide hardwood decking cut into 50mm strips. Practice drilling the string and bridge mounting holes on it. When you've got it perfect, do it a second time and glue the two pieces on top of each other with the holes perfectly aligned. You've now got a drill guide that you can use to get the holes right and help keep the drill bit vertical.

[Rabbitz]

Another good tip on top of what HereIsJT said, is to get some solid wood about 15mm thick about roughly the size of the bridge. I used some 80mm wide hardwood decking cut into 50mm strips. Practice drilling the string and bridge mounting holes on it. When you've got it perfect, do it a second time and glue the two pieces on top of each other with the holes perfectly aligned. You've now got a drill guide that you can use to get the holes right and help keep the drill bit vertical.

That's a bit brilliant.