I ran across the ”Workbench clamp for perfect dovetails” article by Michael Pekovich from Fine Woodworking.
The article suggests drilling holes in your bench to accomodate pipe clamps to hold down a guide board. I REALLY like the clamp idea but even though I revere a bench as a consumable, I’d rather not drill THAT big of holes in it.
I’ve come up with an alternate solution that does not require any new holes in your bench. This means it can also be used in whomever’s workshop you might visit. This is a real plus for me since I often work in other’s shops.
If you straddle this block across the corner of your bench, you can achieve the same effect but not have to drill holes in your bench. I also swung the head of the clamps outwards to give more room for your hands when holding the chisel.
I drilled a blind hole for the upper pad of the clamp to keep them oriented for easier setup. Without these shallow countersinks, the clamps could easily rotate around making the tightening process difficult.
The added slat(shown transparent), spanning the lower part of the bars, corrals the lower part of the clamps. This should make it much easier to put in place until you get the clamps tightened down (and is required once you swivel the clamps outwards).
You’ll also note that I’ve incorporated the more commonly found bar clamps. A wide variety of clamps could be used for this though.
Credits: Again, this is not my idea. I just enhanced the “Workbench clamp for perfect dovetails” article by Michael Pekovich from Fine Woodworking. I am(again) merely standing on the shoulders of others greater than I.
-- Backer boards, stop blocks, build oversized, and never buy a hand plane--