Anyone have experience with this combo. I have a D4R Leigh dovetail jig and a Dewalt 618 router. Using good PC brass bushings I can not get a workable halfblind joint in 3/4 sides and 1/2 fronts and backs.
After 8 attempts following every instruction I gave up. The joint never really changed in fit. It started out tight. Per instructions I raised the bit "Slightly" about 1/128 and cut new. Same result. I eventually moved the bit up 1/16, no change.
I reset the fingers. They started out all set tight against each other. I eventually put a 1/32 between each. Still no change in fit, it was tight. Tight means the joint will not slide together. Tight means trying to pound the joint together with a mallet results in the wood splitting out. (OK that was frustration on # 6)
Finally I started looking at the router. The thing is so loose when you release the adjustment lock I can adjust height by pulling or pushing the base and get a 1/64 of an inch slop. Also and more importent is the side to side concentricty of the bushing to the bit. It can vary so much that the bit shaft contacts the bush. That can't be good.
To allow for this I double routed the last two tests, as in hold router one way, rout... turn router around 180 and rout again. This method did produce the closest thing to a workable joint but still too tight.
Anyone else experience anything like this? OH 7/16 bush and a 128-8 bit starting depth of cut 3/8