Working on some car parts for a friend (an antique, 'wooden' body car). The pieces I am trying to replicate were joined with a 'finger' joint. But the fingers arent tapered, they are all square.
The pieces to be joined together are about 2.25" thick square (cross section), one about a foot long and the other about 4ft long - white oak. The fingers are 1/8" thick, and about 5/8 deep.
Does such a cutter exist? ( have a router table and also a shaper) Else I 'might' be able to use a slot cutter and make a bunch of cuts raising the bit precisely each time (sounds tedious and prone to error...)
Box joint cutter would work, if there was one with 1/8" fingers and could go 5/8 deep.... havent found it.
One end might be doable indexing across a table saw blade (short stubby piece). The other part though is about 4ft long so would stick up pretty high in the air if I tried it on the table saw. Maybe a jig of some sort to hold it is the answer (I do have an incra fence I could put on it for the task).
Other ideas? (will see about getting some pics...)
(it may be acceptable to use a traditional finger joint bit... will consult with him on that option since it wont match the other joints and this is a resto)