Novice asks about joinery / routing / finishes

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If these are answered here on DIY or elsewhere, please direct me to the post or website.

FOR A ROUGHLY 2 CUBIC FOOT ENCLOSURE -- STRAIGHT SIDES, NOMINAL 1 INCH THICK.

Nothin' fancy essentially, but veneered with decent fine grain wood -- 1/8" or 3/16" cherry / maple / ash (decision not yet ready).

BTW, the biscuit method is NOT in my tool budget -- an apology herewith offered for advocates of it !

1. Edges joined by butt / half-lap / full-lap --- what is your preference for a mini-monitor (not huge) enclosure ?

2. Strengthened by glue & screwed corner blocks -- or other method ? (Side to side bracing will be done, but I am asking strictly about edges.)

3. Type / brand of glue that's resistant to shrinkage & expansion as humidity changes ?

4. Outside side-junctions softened by round-overs routed to minimize dents and splinters -- what bit radius ?

5. Woofer is Audax HM 210 CO (woven carbon fiber), which has a compound (radius + straight) routing requirement. Am I in for a headache-producing jig procedure, or is there a simpler way ?

6. For finishes, opinion as to whether "one step" --- stain & sealer combined -- is just as durable and pretty as the older separate stain/sand/coat method ?

As the cliché goes, thanks in advance . . .
 
Well, aside from different philosophies on material type, thickness, and bracing schemes - because I'm a lazy bugger, tend to go with max 18mm BB / "Apple" ply, and between panel bracing to break panel resonances into multiples of higher frequencies, rather than brute force mass + damping + constrained layer, etc. - I'd offer the following.

It's more likely the movement of the wood material from swings in temp / humidity would be likely to cause joints to split than any decent modern cabinetmaker's glue. I use Franklin Titebond II (modified PVA) - today's glues are pretty strong.

Rabbets / dadoes should provide plenty of structural integrity / glue surface area at joints -on smaller enclosures, corner blocks would probably be redundnat . Since you'll be post veneering the cabinets, butt joints and screws / brand nails from the outside are fine for internal bracing between panels.

For veneering, I far prefer the ease of working with thin paper backed flexible veneers that can be applied with the very low tech iron-on wood glue method, and can provide excellent coverage and grain matching/wrapping on smaller enclosures with a single 4x8ft sheet. To prevent telegraphing of surface irregularities / joints, a bit more time is required in surface prep as compared to using thicker materials or rigid plastic laminates.

I've yet to find a "one-step" stain and top coat finish that I like - being lucky enough to work in a commercial production facility, there's access to a full spray booth and HVLP equipment. But I've also had good results on small projects at home with Mohawk brand true NitroCellulose lacquer in aerosol cans. It's a personal thing - neither am I fan of polyurethane or water based top coats.

As to making patterns for rebating of irregular shaped /truncatedframes like the Audax, others can advise there - I'd just get them routed on our CNC, or when that's not available, hand cut small curved filler blocks and bondo the buggers up before veneering.
 
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