when i made the drive pulley for my 26 inch bandsaw i cut the groove on that using my tilting
rotor lift and a slot cutter on this rotor lift i can just tilt the whole router assembly and that's
how i got the angled size for that v-groove but you might want to build that bandsaw and you might
not have a tilting router lift so let's see how i can do that without the tilting router lift so i'm
going to make it this size which is a bit smaller than the one on here this one really is too big
foreign
i am starting my circle with a backward scoring cut to avoid tarot on the bottom
pretty clean on the bottom a lot of cheap runner bit sets come with a slot cutting bit like this
so i'm going to use that to do all the work i just have to put that in the rotor now
the slot needs to be about 10 millimeters deep so i'll just set my fence to that and the plywood is
18 millimeters thick so i want the center of the bit to be nine millimeter above the base like that
and to avoid things getting out of hand i'm gonna put a side stop right here
the next thing i did last time is just to tilt my router lift by 20 degrees but you
don't have a tilting router lift so instead i need to incline my work piece by 20 degrees
now this v-belt is half an inch wide or 12.7 millimeters and this is 18 millimeters thick
so realistically i want about two and a half millimeters left on either side of the groove so
let's just check that with some scrap i've got uh too much left here so i'll raise the router a bit
that's about right now i'm worried that i don't have enough bearing surface on here i
might step back a little bit so i'm going to add a little bit more support down here right there
that's what it sounds like when the router can't turn because the bit has hit the fence
that's looking good and the belt doesn't bottom out in the pulley now before i do
anything cutting out in the middle i'm going to draw some concentric circles on here
that way i can reestablish the exact center later on even if the middle is missing now
if i was going to put this pulley on my bandsaw i would cut the square hole in the middle of it
and then carefully center it like i did this one i talked about that in the video
about making this wheel but instead i'll just try to put this pulley on my lathe
i want to get this hole exactly perpendicular in this workpiece so by rotating the workpiece 180
degrees every few millimeters of drilling that'll cancel out any angle air in a drill press table
i've also drilled a hole through the sides on here and this is for clamping down on the
shaft
oh nice
and now let's tighten that on the shaft a bit
so if i had a non-woodturning application where i needed to turn my lathe really slow
this is the way to do it now in the past i've also cut these uh grooves like that
on the table saw just by making multiple cuts like that and then of course to get the sides
i can just tilt the table saw so it's a bit like a tilting router lift but i don't
recommend that procedure because it's a little bit hair-raising and for smaller pulleys it makes more
sense to make a temporary pulley to spin the shaft and then just lathe them with a chisel
and aside from band saws i've also made pulleys like that for my apple grinders
because those need to run fairly slow otherwise they throw chips all over the place