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 Post subject: Chip board help pls
PostPosted: 12 Jul 2010, 09:36 
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Joined: 09 Jul 2010, 15:39
Posts: 6
Just a quick question, has anyone tried making an enclosure out of chip board? i understand there are two types, the one i have lots of has a smoother surface, ive searched the forum but nothing much has come up.


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 Post subject: Re: Chip board help pls
PostPosted: 12 Jul 2010, 19:17 
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Joined: 28 May 2008, 21:53
Posts: 4580
Location: Winnipeg, CANADA
Assuming this is for a speaker enclosure, I would recommend something of much better quality. A birch multiplex plywood works really great but is a bit pricey and sometimes hard to locate.

MDF is readily available, inexpensive and a much better choice than chip board. However, be sure to wear a mask or use a dust collection system as the MDF dust is not very nice.
Cheers

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 Post subject: Re: Chip board help pls
PostPosted: 13 Jul 2010, 06:50 
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Joined: 04 Oct 2008, 11:29
Posts: 375
Location: Chillicothe, Ohio
Chip board is vague terminology, and can mean different things to different people, even in the same area.

Engineered woods have a great range of uses, and most are simply not suitable for speaker building. Some resins/chemicals used in their manufacture are toxic. Some will not hold screws well, and/or stay glued together well for the purpose of an enclosure. Some will not cut well and leave a nice straight edge that will seal properly. Some will begin to separate and buzz or rattle over time, when subjected to the pressures inside a speaker enclosure.

I agree with Gio, in that MDF is hard to beat for general, all purpose use to build an enclosure. At least 3/4". Also, as he alluded to, very high grade plywoods are great. My local Menards has a great selection of birch and oak plywood up to one inch thickness.

Cheers,
Greg


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 Post subject: Re: Chip board help pls
PostPosted: 13 Jul 2010, 14:23 
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Joined: 09 Jul 2010, 15:39
Posts: 6
thanks guys so mdf it is, im guessing you would all suggest 3/4" right?


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 Post subject: Re: Chip board help pls
PostPosted: 13 Jul 2010, 16:10 
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Joined: 24 Jun 2010, 00:48
Posts: 788
Location: Christchurch, NZ
1'' will be more rigid and less prone to resonances. Brace it every 6 inches or so. If you prefer a "live" sounding enclosure, then you could use 3/4''. Below is an example of how I braced my latest 2 way TMM floorstander (1inch thick MDF). You can still feel vibrations outside the box but these rarely resonate inside enough to colour the sound.


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 Post subject: Re: Chip board help pls
PostPosted: 13 Jul 2010, 20:37 
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Joined: 28 May 2008, 21:53
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Location: Winnipeg, CANADA
Another thing to consider with MDF is the physical weight which can get pretty large with a big enclosure.
Cheers

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