Speaker build - Bondo resin with mat?

Discussion in 'Amps and Cabs [BG]' started by turcmic, Jun 3, 2019.

  1. turcmic

    turcmic Supporting Member

    Jul 30, 2006
    Montreal, QC
    I just started building a fearful 12/6 and was evaluating exterior finishing options. I know DuraTex is highly recommended but I was wondering if painting the cab in black and covering it with Bondo fiberglass resin and fibreglass cloth or mat would do the job.

    2 reasons :
    - DuraTex is not available around here and I’m tired of paying for shipping charges... and Bondo stuff is available everywhere
    - the cab will mainly stay in my practice room but will probably go out for band practice once in a while. I don’t need full proof everlasting protection but don’t want bare wood either

    Any suggestions?
    fhm555 likes this.
  2. Foz


    Jul 26, 2008
    Jax FL USA
    Get some advice from your local professional paint store. They will have something industrial strength available. Black is the loudest color for cabs.
    turcmic and Stumbo like this.
  3. Stumbo

    Stumbo Guest

    Feb 11, 2008
    I have, what I was told, a prototype Carvin 2x10 double tilt back cab that is black (minimal shine) and covered in Fiberglass mat.

    Hard as a rock and scratch resistant (I've never had to touch it up).

    IME, it works great. Might add a bit of weight, though. Also, You can see the mat if your up close but who really gets that close?
    turcmic likes this.
  4. BogeyBass

    BogeyBass Inactive

    Sep 14, 2010
    Just use tolex.

    Or maybe some fuzzy fur or something
  5. charlie monroe

    charlie monroe Gold Supporting Member

    Feb 14, 2011
    Buffalo, NY
    OMG. Rat fur on a fearful?

    That would be awesome
  6. turcmic

    turcmic Supporting Member

    Jul 30, 2006
    Montreal, QC
    I have rat fur on my other cab (Epifani) but have no idea where to buy rat fur?
  7. charlie monroe

    charlie monroe Gold Supporting Member

    Feb 14, 2011
    Buffalo, NY
  8. BogeyBass

    BogeyBass Inactive

    Sep 14, 2010
    I didn't mean rat fur
    I meant like fur fur. Like bunny fur lol
    Or like monster red or blue from thetfabric store .

    On serious side. Guess if you scuffy duffed the wood and used maybe fiberglass reinforced Bondo.

    I always wanted find a goopy product that worked. And could almost use roller and roll in a very convinceable tolex pattern.
    charlie monroe likes this.
  9. BurningSkies

    BurningSkies CRAZY BALDHEAD

    Feb 20, 2005
    Syracuse NY
    Endorsing artist: Dingwall Guitars
    Find some upholstery grade fake fur. It's out there. Or go all out and make your new cab look like a 1990's NYC clubkid drag queen.

    Multicolor Faux Fur 1 Yard Long Pile Hobby Crafting Fake Mongolian Cosplay Fabric by the Yard Shag Rainbow Costume EDC Camo / Cow / Mix
  10. BogeyBass

    BogeyBass Inactive

    Sep 14, 2010

    Dude UV reactive. Lol

    Go straight retro modern rave girl.
    Be hottest rachet on the scene


    Fake wood drawer paper? Then like a zillion coats of poly

    Last edited: Jun 3, 2019
    BurningSkies and turcmic like this.
  11. fdeck

    fdeck Supporting Member Commercial User

    Mar 20, 2004
    Madison WI
    HPF Technology LLC
    There are some really dark colors of wood stain, including one called "ebony." That, and some clear varnish, would do the trick. I've gotten to the point with my DIY speakers, where I don't want to add the expense or weight of a "pro" finish for a speaker that's never going to get banged around.
    wave rider and turcmic like this.
  12. beans-on-toast


    Aug 7, 2008
    You can order a quart or pint kit of Duratex here:

    NKBassman likes this.
  13. turcmic

    turcmic Supporting Member

    Jul 30, 2006
    Montreal, QC
    Pink fur with a unicorn :wideyed:
    Stumbo and 1960jbass like this.
  14. Redbrangus

    Redbrangus Supporting Member

    Nov 19, 2018
    Under The X In Texas
    A fiberglass/resin outer coat, properly done, is incredibly durable, but it does add a lot of weight. Maybe not double the weight of a painted plywood box, it sure seems like it's close. In a small-ish box like a Fearful, maybe it's not a big enough difference to matter too much, but in larger boxes the additional weight really does start to add up. It sounds to me like, in your situation as described, you'd be served just fine by a good grade of regular old black paint--acrylic or latex enamel--but unless you're just enamored of the textured look, you don't really need the Duratex. And I doubt you need the additional durability of fiberglass, but it does work...there's just a huge trade-off in additional weight. A coat of 'glass adds a lot of structural integrity to the whole enclosure in addition to lowering the resonance of the whole system, so there are things to recommend it other than the inherent long-term durability. It's been ages since I dabbled in 'glassing boxes, but my recollection is that it wouldn't be much cheaper than Duratex...my memory may be faulty on that, though.
    Stumbo and turcmic like this.
  15. Jeff Scott

    Jeff Scott Rickenbacker guru..........

    Apr 11, 2006
    Out there!
    A few roll of duct tape should do nicely, and it is really cheap, too. Easy to retouch when/if needed.
    mikewalker, BBQV, 1960jbass and 2 others like this.
  16. Frankly, I’ve built FG boats so I advise against FG for DIYers. It takes understanding and diligence to make a good job of it.

    If you're going to do fiberglass then learn how to make the most of a squeegee and elbow grease. Maximum glass and minimum resin yields the best that FG has to offer. Glass is strength, resin is weight, elbow grease is quality. The squeegee ensures that the cloth (mat) is saturated through, that bubbles are eliminated and that excess resin is scraped away. If you leave too much resin, along with weight you get weakness; too little and cloth saturation doesn’t happen and you get weakness as well.
    singlemalt, Mugre, mikewalker and 3 others like this.
  17. BogeyBass

    BogeyBass Inactive

    Sep 14, 2010
    Reality wise.
    After spending 300 ish plus dollars on drivers.
    Don't add to the expensive incredibly ugly home made cab club.


    1) buy some tolex and real cloth grill. Go pro bro ...go pro

    2) go with the Unicorn thing. But take Unicorn to the next level. I need glitter, I need bling. Lights, fur freaking matching pearl handles/ hardware...etc etc.
    Still a cloth grill. Pro Unicorn , ultra pro Unicorn. Epic Rainbows that strike fear in all men's Eyes
    mikewalker and turcmic like this.
  18. turcmic

    turcmic Supporting Member

    Jul 30, 2006
    Montreal, QC
    Thanks for the comments!
    I was not aware of the weight factor. That’s probably why I didn’t find anything using the search function.

    And yes, glassing seems cheaper
  19. ahc


    Jul 31, 2009
    No. Virginia
    Nah... Do it up like the classic Kustom tuck-and-roll cabs:

  20. The blue was the benchmark color. None of the others had nearly that much class.
    daveman50 and ahc like this.