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<blockquote data-quote="szmidi" data-source="post: 7549987" data-attributes="member: 636599">Hi all, I need to re-open this thread to ask a few more questions. Birch looks like it is not going to be an option due to availability so I am going to go with fibreglass. However my knowledge of the subject is limited to &#039;its like paper mache&#039;. There is strips of fibreglass and a resin and you paint the resin on then let it dry. I have read a few threads / worklogs but they seem to start a few steps past my current lack of knowledge.So........How thick does the fibreglass need to be?Is fibreglass strong enough to hold the weight of the subs if they are mounted with the cone facing out horizontally?Are there any sound quality issues with fibreglass as it won&#039;t be as solid as 3/4 inch mdf?How much fibreglass will I need per square metre (or sq foot) so I can estimate costs?If I mould the fibreglass into the stock interior, will it rub and wear away at the original plastics and damage them?What does a typical fibreglass box weigh (my mdf box, with subs/amps is 60kg)Do you just use screws into the fibreglass or is there another more suitable way of fixing the subs / amps in?</blockquote>

[QUOTE="szmidi, post: 7549987, member: 636599"] Hi all, I need to re-open this thread to ask a few more questions. Birch looks like it is not going to be an option due to availability so I am going to go with fibreglass. However my knowledge of the subject is limited to 'its like paper mache'. There is strips of fibreglass and a resin and you paint the resin on then let it dry. I have read a few threads / worklogs but they seem to start a few steps past my current lack of knowledge. So........ How thick does the fibreglass need to be? Is fibreglass strong enough to hold the weight of the subs if they are mounted with the cone facing out horizontally? Are there any sound quality issues with fibreglass as it won't be as solid as 3/4 inch mdf? How much fibreglass will I need per square metre (or sq foot) so I can estimate costs? If I mould the fibreglass into the stock interior, will it rub and wear away at the original plastics and damage them? What does a typical fibreglass box weigh (my mdf box, with subs/amps is 60kg) Do you just use screws into the fibreglass or is there another more suitable way of fixing the subs / amps in? [/QUOTE]

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