Anarchy/Dayton TM build - Page 2

The Curvomatic.




Rick's design used the PE 0.75 Cubic Foot Curved cabinet.
I don't have one, but I will try to make mine pretty close to theirs.
Here I experimented with curves and offsets until I found a look that I liked.

Haha! I just hope I don't get them confused when I try to install the drivers. Just kidding.

At first I thought I might try something a bit more wavy for the cabinet sides, but I decided to go the easy route for this build and just do a simple curve.

I cut a curved form.




Then duplicated it.





The layout.
Draw a line tangent to the curve at both ends. (All this is in the instructions at the Curvomatic site in both video and text).



Draw a line between 20-30 degrees from the previous line (I went with 25).



The reason for the second line is to position the straps at the best location for pulling at the angle that works best.

I now know the length I need for the 2x4s the forms mount to.




I was out of 2x4 stock, so I ripped a 2x8.
Round the ends so the straps can slide easily as needed.
I doubted the strength of 1.5" thick pine under pressure, but I wanted to try it anyway.




Forms ready for the first dry run.




Secure the bottom cheek.




The pine flexed rather a lot, but I still got a nearly perfect front edge curve.
The top cheek needed a little repositioning and the pine needs to be made stronger, because it is too thin for this much pressure.




The trailing edge needs work. I need to add another section or two on the top cheek.




This was my first dry run test (no glue) and I am pleased with what I see.
After some adjustments, I will try again tomorrow.

Thanks, man.


The pine 2x that bowed under pressure--I made them into I-beams and they're pretty solid now. I know it's overkill, but I wanted to use up some plywood scraps I had.




Here's the first glue-up and it's looking good. I used a stack of three 1/4" MDF.

Thanks guys.
MJAudio--You're right. I actually do have three different projects going on at the same time in the garage.

I wondered how much spring-back I would get, once the straps were removed.
It didn't move much at all.

For the first curved panel, I wrestled a bit with positioning the top cheek along the front edge of the panel. Tightening the straps pushed the top cheek back from the edge. I went back and forth a few times before I got it right--loosen the straps, realign, re-tighten, oops, loosen again. I got it right on the fourth try. With a little more experience, I'm sure I could get it right on the first try.

But, I tried a slightly different approach with the second panel.
I began by applying clamps on the front edge to lock everything in place.




Then I tightened the straps.
Tightening the straps is easier if you push downward to tighten, because you can put your body weight into it. It's pretty effortless, really.

Thanks, TC.

Encouraged by how well the second panel glue-up went, I decided to try applying the veneer at the same time that I glue-up the third panel.
It will be a neat trick if I can shape a curved panel and veneer it in a single step.

Again, I'm gluing three 1/4" MDF panels, using Titebond II.
Since I've had some trouble with water-based glues wrinkling the veneer in the past, I decided to use some 60 minute epoxy for the veneer on this panel.

Later, I will experiment with other glues.

Some waxed paper acts as a barrier to prevent glue seepage from getting on the top MDF sheet, permanently gluing it over the veneer.




The top MDF sheet is 1/8" thick. It was a pallet protector. I was in the right place at the right time and Home Depot let me have it for 51 cents.




Again, I clamped the front edge first to keep things aligned and then applied pressure with the straps.

You're a funny guy, Chris! Thanks.

I looked really close and I don't see any veneer bubbles.
I believe I got good adhesion for the veneer and curved the panels at the same time. Obviously, I haven't sanded yet, but this looks very good to me.

I over-sized the panels a bit, but it shouldn't be a problem at all.

Thanks, Square88!
I needed to take a week off.

Found this waiting for me in the garage. Soon after, he wasn't feeling very well.




Now for the tops and bottoms.














And some braces.

Aah! Clamps at last!
PL Premium construction adhesive was used on the vertical braces, TiteBond II elsewhere and 18 gauge brads were used to pin it.

Thanks, TC!
JohnGalt47--It should be real close to 0.75 cubic feet.

I just got back in town and should be back on this project tomorrow.

Clamps off.








Trim a little off.

Great name! I may have to use it. And thanks for the compliment.

BP1Fanatic--Thanks!