nexrex said:
Just a trick i picked up from a guitar tech friend. Get you studs and pop them in the freezer. The metal will shrink, and then put a dab of past wax on the bottom. Doing this now, and they practically slide in. Hammer and wood block to tap them in with little effort.
:headbang: :headbang:
you must have one cold freezer!
this trick helps with metal being pressed into metal where the interference is maybe .001-.002" depending on the diameter of the part. beyond that you need something like dry ice or liquid nitrogen to negate the need of a press or a bigger hammer. the diameter of the studs is way to small to make a difference but it may help keep the wax from thinning or something.
i used to install bearings in magnisium landing gear wheels on f-15's the interference fit was as much as .006" we needed 2 guys a 100ton press liquid nitrigen and a heat treat oven to get it done. at i think it was about 6" in diameter it look -300degF + on the bearing and 200-300degF on the wheel to make that .006" difference and the bearing warmed up before you hit the bottom of the hole 3 in 4 times which is what the press was for.
since it is wood an arbor press or a hammer as long as you keep it strait will do just fine. the interference is likely greater than .005" as i doubt that the holes are reamed more accurately than that. not that the reamer doesn't make a good hole but because with all the species of wood and varying hardness and expansion due to humidity i think it is hard to keep it consistant and more interference is better than none.