BillFitzmaurice.info

Four T60 will go lower and louder.

V coupling works by making the horn path longer, the T60 horn path is long enough without it.

Cold slows curing and it also lessens expansion. One reason why urethane works so well is it expands into the pores of the wood. You want to maximize that. It cures best on a warm humid day.

Marflinger wrote: ↑Sat Dec 27, 2025 7:39 am Now the glue needs some time to set, as its friggin cold here this takes a while...

Urethane needs temperatures of at least 15C plus humidity of at least 50% to cure properly.

1HP lacks power, 1/4" bits don't work well. I recommend this: https://www.ryobitools.com/products/332 ... Ruu_JQBXsz

If TNuts weren't a problem they'd be recommended. They are a problem. If you spin one getting the bolt out is extremely difficult. Using Loctite makes it almost impossible.

Ryobi and Makita are both good. 2HP for freehand, 3HP for a bench mount. I have both from Ryobi.

Plus a router and jig cuts driver holes with precision.

The mids are low.

I've got to think that your 5.5" isn't all that powerful. My 5.5" 18v Porter Cable that I got 25 years ago was pretty anemic. My 20v DeWalt 7.25" is pretty rubust.

I'll put it this way. I have two corded circular saws. I haven't used either for at least 12 years. They just collect dust, along with all my other corded hand tools.

I built every prototype with a circular saw, just to be sure it could be done. Do not buy a corded circular saw, you can't use that in the lumberyard parking lot. This one looks good: https://www.greenworkstools.com/products/24v-circular-saw-7-1-4-saw-blade-dust-connector-kit-w-4-0ah-usb-battery-cha...