i need to do a whole bunch of glue ups where i'm reaching across to the middle of the boards with
my long-range c clamps only problem is i've only got four of these plus my original prototype and i
finally decided to make some more of them smaller lighter ones using these screw thingies that i've
already got so i don't have to make knobs i'm going to make them out of pieces of wood like that
join in the back with a sort of a box joint right there with my box joint jig of course
i get all the joints in these pieces cut now i just need to cut a complimenting joint in
those pieces and actually this joint is nearly symmetrical in that this barely fits in there so
i just need to cut the slots a little bit wider in this part and it'll go together perfectly
so i've got a test piece in here and each of these slots is actually three cuts the first cut is here
second cut is here and the third cut is way on the other side so i have to move that third cut a bit
further over so the jig moves over for that last cut a bit more which makes that slot a bit wider
so i just did a test joint in this piece of scrap and it's too tight
it's also a little bit off center so i tweaked it a little bit and now that fits really nice
ah
so i finally had the idea of putting a piece of tape on the jig to mark my joint starting position
and that way rewinding is a lot faster
ah
foreign
these new ones are not as strong and fancy as these ones i didn't bother making a pad to go
on the end here and i didn't have to make a handle for these part of the reason for
notepad is because these uh screw threads are here just a bit too short in fact they don't
close all the way but usually i'll just put some kind of uh pattern here anyways not to
mark up the wood and that'll make up the remaining distance and they easily reach halfway across this
board here with a little bit of room to spare the way the jointer is done on these clamps
they're basically only limited by the strength of the wood so that's a hundred pounds there
and somehow i'm not applying weight evenly enough because the scale's not moving any
further okay now with plywood underneath and the stronger piece of wood on top 120 140. 160 180
200 pounds or 90 kilograms let's see let's take it up to 100 kilograms so i think these
clamps are strong enough that's 220 pounds as much as i like the natural color of the wood
i gave these clamps an ugly blue paint job to keep them visually distinct from the work piece
and then back to having run out of clamps at least claps with any sort of reach like
these ones or these ones and back in 2011 when i made these fancier clamps i made a
longer video about making clamps like that so if you want more detail go watch that
video
you