BillFitzmaurice.info

Hi all.

The project is a go.

I got my wood sawed by the store - as I thought they could make the cut more precise than myself. Well. Lesson learned. Don't do that.

It's not too bad though, and I believe I can fix the minor issues as I go along.

My biggest problem is, the main plate, where everything attaches to, decided to bend backwards. As far as I can see, there's only two parts that straighten the sides - and they are both in the same end.

Any tips?

I used a piece of scrap wood, and straightened it out. I placed it in the horn-mouth, so I can remove it when it's finished.

It depends on how bad the warping is.

• If the warping is relatively minor, I think that the approach you've taken will likely be OK. Also, adding the panels and other side will help to force the side into shape.

• However, if the warping is extreme, you may want to discard that piece and cut a new one. I understand that you're looking to keep the cost of the build down, but buying a new sheet of plywood will be less costly than ending up with a bad subwoofer and having to redo it.

JensToft91 wrote: ↑Wed Jan 12, 2022 12:03 pm Hi all.

The project is a go.

I got my wood sawed by the store - as I thought they could make the cut more precise than myself. Well. Lesson learned. Don't do that.

It's not too bad though, and I believe I can fix the minor issues as I go along.

My biggest problem is, the main plate, where everything attaches to, decided to bend backwards. As far as I can see, there's only two parts that straighten the sides - and they are both in the same end.

Any tips?

Awesome Jens! I didn't expect it to begin so soon. Good for you

My experience with having the lumber yard cut down sheets is; the equipment is great and very capable of doing a really good job. But, the blade is nearly always dull and the employee making the cuts thinks ½" off is close enough.

Follow the plans instructions for dealing with warpage. As it comes together, it'll straighten out. Honestly, I'd rather have a warp in the sides than in the panels.

The support I made is working pretty well. I'll post a picture of it when I get home.
I was very clear about the precision at the lumber yard - it was the saw. Most of it is the same width - but some of the boards is narrower towards the end. Like the sheets tilts when the saw approaches the end. Plus, the cuts themselfs are very slightly curved - so the board have the same width thoughout - but is curved "lengthwise". But I believe it's doable.

Couple of pics of the curve attached.

Driver for scale (another 12 inch)

I think you'll be fine.

Good luck with the build.

When you secure the side, you should be able to pull that curve out as long as you secure with screws. If you use a nailer, you might have a hard time getting air tight.

Be careful if you have to cut the curved sheets, it can cause chaos with an angled edge.

It's starting to take shape! Panel 5 was a struggle. I ruined my saw-sled, because i forgot that the saw was set to a 7-deg angle from the previous cut.
The panel is not super straight - but I'm sure it's airtight. I don't think it will cause any problems

Chris_Allen wrote: ↑Fri Jan 14, 2022 8:06 am When you secure the side, you should be able to pull that curve out as long as you secure with screws. If you use a nailer, you might have a hard time getting air tight.

Be careful if you have to cut the curved sheets, it can cause chaos with an angled edge.

I'm using all the screws i feel that's necessary.

How does the curved sheets affect the angled edge? I'm using a saw-sled- so the panel is always pressed flat during a cut. I can imagine the problem on a table-saw though

Close-ups

Looking mighty fine Jens You're nearly on the home stretch! Nice job.

I'm anxious to hear your report of how it compares to your TT.

Thanks!

Me too. I'll post side/side measurements when it's completed

I ran out of my PU glue, and went to buy a new one. This one expands a hell of a lot! Now I get why people say "I don't like PU. I makes me puke".

The driver will arrive in march. So I need a bit of patience though.

JensToft91 wrote: ↑Mon Jan 17, 2022 12:11 amI ran out of my PU glue, and went to buy a new one. This one expands a hell of a lot! Now I get why people say "I don't like PU. I makes me puke".

What are you using? Most of us here us Loctite PL glue. It expands some but not anything like a foam does. The smell isn't anything noxious but it will ruin anything it touches.

It's Danish, so you probably can't look it up.

I have attached a picture of it, where you can see the new (Very foaming) glue line applied outside of the joint to seal it. You can also se a glueline of the old, less expanding glue.

Should I but something else?