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Old 6th July 2013, 06:24 PM   #21
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I now get Baltic Birch for $60 per 3/4" 5x5' and $40 or so (I forget because I don't buy it as often) for 1/2" Baltic 5x5'. Authentic Baltic, never any voids, triple B rating. BB/B

Cuts nicely, sands and Stains great, a JOY to work with. And super strong with proper cabinet construction.

Before I was paying over $80 at one supplier for 3/4". Much happier now, and won't buy anything else.

Anyone in trip-state NY/NJ/CT area I deff recommend them. I am in no way affiliated with them, I'm just a pleased customer.

Rosenzweig lumber corp in Bronx NY.

Last edited by m R g S r; 6th July 2013 at 06:26 PM.
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Old 6th July 2013, 07:22 PM   #22
Jsixis is offline Jsixis  United States
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Quote:
Originally Posted by lanchile View Post
My friend works for a big company that build cabinets and speaker enclosures and He has in his house a BIG exhaust fan "attached" to his table saw that gets MOST of the dust out. He used to build MDF speaker cabinets for me long time ago. I think it will help a lot an exhaust fan that can take all the MDF dust out or filtered kind of way.

the dust is not the problem, the problem is that haze you see in there air. Masks won't stop that and wood workers have the highest rate of lung cancer among non smokers.
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Old 6th July 2013, 07:41 PM   #23
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Ohh and if I'm not using Baltic, for a smaller cabinet I enjoyed using poplar, or oak etc. any Solid hardwood Finishes up nicely.

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Old 6th July 2013, 08:13 PM   #24
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Quote:
Originally Posted by lanchile View Post
I never used plywood for speaker enclosures. The best choice so far is MDF.
Hahaha (on you)

We use the Maple faced Murphy ply (15 plies in 18mm)

dave
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Old 6th July 2013, 08:21 PM   #25
ODougbo is offline ODougbo  United States
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OMGOSH need to sand that table saw top - did you use that for the speaker builds?


Quote:
Originally Posted by m R g S r View Post
Ohh and if I'm not using Baltic, for a smaller cabinet I enjoyed using poplar, or oak etc. any Solid hardwood Finishes up nicely.

Click the image to open in full size.

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Old 6th July 2013, 08:31 PM   #26
doorman is offline doorman  Canada
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As stated above, MDF is really heavy, the dust is really nasty, and the stiffness is inferior to top quality plywood.
It does however burn really nicely, once it finally catches!
Don
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Old 6th July 2013, 08:43 PM   #27
ODougbo is offline ODougbo  United States
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There's 1,000+ dollar Velodyne out there with 5/8" mdf, or some type of composite (reportedly).

There is a really cheap multi layer 3/4" china board out there, it's really strong, but veneer is really thin. A favorite at cabinet shops in this area at $35 a sheet.



Quote:
Originally Posted by mr. doom View Post
No high end professional subwoofer box is manufactured with MDF.

It may be used for home/auto boxes where strength to weight is a low priority but the big boys use high quality baltic for big horns and dual 18 boxes that mortals can move without a forklift. It is stronger and holds up better to moisture which along with the dust is why I will not buy another sheet of MDF.

Arco used to be decent but the china ply from the box stores is mostly junk.
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Old 6th July 2013, 09:52 PM   #28
DrDyna is offline DrDyna  United States
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Quote:
Originally Posted by doorman View Post
As stated above, MDF is really heavy, the dust is really nasty, and the stiffness is inferior to top quality plywood.
It does however burn really nicely, once it finally catches!
Don
Gasoline helps, just ask my right eyebrow!
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Old 6th July 2013, 10:30 PM   #29
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MDF is really just thick cardboard. Nasty stuff. But the density difference between it and BB Ply is really high and they are both very manufacturable, which makes them an ideal pair of materials to sandwich together for really solid dead boxes. I've been building MDF boxes with BB internal ribbing and second layer for fronts and backs, with proper bracing, tapping on a set of cabinets made with that combo is like tapping on a railroad tie.

I'm not a fan of MDF, but adding it to BB Ply really is better than the sum of the parts.

Sheldon
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Old 6th July 2013, 10:49 PM   #30
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by stokessd View Post
I'm not a fan of MDF, but adding it to BB Ply really is better than the sum of the parts.

Sheldon
a laminate of 12mm BB - 12mm MDF - 12mm BB ... sure

but a lot of work, and might just as well do matix bracing
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