|Project by MrLaughingbrook||posted 06-07-2015 06:01 PM||12990 views||21 times favorited||9 comments|
My kerfmakers -
I read about this useful jig on LJs and decided on making each dedicated to a blade (or stack) to avoid the complexity of an adjustment.
1. those kerfmakers with three limbs look hard for a first kerfmaker
2. thought if i cut through the throat and dedicated it to a single blade or stack then I could get by with two pieces
3. centered groove in top and bottom pieces
4. glued a protruding rail, spline in the bottom half
4. cut a block off of the top, glue it to the bottom, note pieces are still long
5. shape a recess for the bolt head in the top at the router with stop block at start and finish, several passes to deepen it on a straight bit, moving the fence back a bit for each pass. Drillpress a hole to start a slot (vertical now if you follow this is for the bolt going down to the base), mount the top through drilled hole on straight bit in the router and route to a stop block.
6. drill press hole in bottom, near opposite end from throat to match floor in top, install threaded insert
7. assemble with throat closed tight, bolt tight, and cross cut the ends to flush top and bottom
8. with throat closed, cross cut a dado right on the slot, full depth of top piece,
9. remember which blade made it
I was asked about that one with no kerf.
It is a blank. It will get a kerf in the throat when I have a stack picked for a project. Actually, the first pictured is 1/4 as measured by the Freud dado blades stacked with no spacers, the second is 1/8 as measured by the flat top Freud rip blade, the third (because it was a test cut with an 1/8 crosscut blade that will not be used for dados, can become anything larger with a cut covering both edges) and fourth are blanks.
I’m thinking for ~3/4 dados then I’ll stack blades and chipper to 1/2 and dedicate a kerfmaker. Two overlapping passes at 1/2 should make a nice ~3/4 fit.
Thanks for looking.