BillFitzmaurice.info

No worries, it's too slight to have much effect.

2026 isn't off to a good start.

Seth wrote: ↑Sat Jan 03, 2026 1:46 pm In the fifteen or sixteen years I've been active on this forum, there haven't been any useful discussion about using HornResp.

There are plenty of DIY forums with HornResp sections, for those who want to design their own. Our purpose is to provide plans to those who don't want to design their own.

The Qes is way too high for horn loading.

Looks OK to me.

The best thing about 2025 is that it's over.

No update, the statement is correct. It means there's nothing to be gained by going wider. Performance will be less if you go narrower.

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.