Howard Rosenberg
11-24-2004, 12:45 AM
Hi all -
I'm starting a dado router jig tomorrow night.
The idea is to glue and screw a fence to a 1/4" piece of plywood and trim the plywood so the edge is parallel to the fence.
So far, so good.....
But I need to mount another fence underneath the plywood to register the jig against the edge of the board - perfectly 90 degrees to the board's edge.
What's the best method?
Is holding a 12" square against the edge of the plywood enough?
I'll clamp it and then finnesse it....
But if the intended dimensions will be approximately 48" long for the fence and the plywood will be less than three inches projecting from the fence, is there an easy-to-use/understand variation on the 3-4-5 formula to make sure the lower board edge registration fence is 100% perpendicular to the upper fence that'll have the router riding against it?
Hope this was clear - I've got to start this jig tomorrow night...
All help will be appreciated.
Thank you.
Howard
I'm starting a dado router jig tomorrow night.
The idea is to glue and screw a fence to a 1/4" piece of plywood and trim the plywood so the edge is parallel to the fence.
So far, so good.....
But I need to mount another fence underneath the plywood to register the jig against the edge of the board - perfectly 90 degrees to the board's edge.
What's the best method?
Is holding a 12" square against the edge of the plywood enough?
I'll clamp it and then finnesse it....
But if the intended dimensions will be approximately 48" long for the fence and the plywood will be less than three inches projecting from the fence, is there an easy-to-use/understand variation on the 3-4-5 formula to make sure the lower board edge registration fence is 100% perpendicular to the upper fence that'll have the router riding against it?
Hope this was clear - I've got to start this jig tomorrow night...
All help will be appreciated.
Thank you.
Howard