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<blockquote data-quote="HardofWhoring" data-source="post: 8845460" data-attributes="member: 674149">I wouldn&#039;t go 1&quot; personally.&nbsp; I would either go 3/4&quot; after the speaker mounting thickness you shouldn&#039;t pierce, or go 1 1/2&quot; or more.&nbsp;&nbsp; Not because of piercing the hole for a seal, but because if you do pierce it, I wouldn&#039;t want to barely pierce it where it is more likely to leave a weak point in the MDF.&nbsp; I could be completely wrong, but piercing it just barely seems like you are making it more likely to chip or flake.&nbsp; &nbsp; I COULD BE WRONG: but mdf is glued and pressed chips as it is.&nbsp;&nbsp; Just barely piercing it seems like the probable way for it to get worse.&nbsp; &nbsp; OR at least know how to pre-drill the holes for the correct size based on the screw&#039;s shank size.If you might take it out several times, you might want to consider T-nuts.&nbsp; They come in all sizes, but you would drill the hole big enough for that center section to fit in, and you tighten them down to pull them into, the underside of the wood.&nbsp;&nbsp; This allows you to use bolts instead of screws, so that if you pull em in and out several times, you won&#039;t degrade the threads.&nbsp;&nbsp; The length wouldn&#039;t matter either.[ATTACH=full]50155[/ATTACH]</blockquote>

[QUOTE="HardofWhoring, post: 8845460, member: 674149"] I wouldn't go 1" personally. I would either go 3/4" after the speaker mounting thickness you shouldn't pierce, or go 1 1/2" or more. Not because of piercing the hole for a seal, but because if you do pierce it, I wouldn't want to barely pierce it where it is more likely to leave a weak point in the MDF. I could be completely wrong, but piercing it just barely seems like you are making it more likely to chip or flake. I COULD BE WRONG: but mdf is glued and pressed chips as it is. Just barely piercing it seems like the probable way for it to get worse. OR at least know how to pre-drill the holes for the correct size based on the screw's shank size. If you might take it out several times, you might want to consider T-nuts. They come in all sizes, but you would drill the hole big enough for that center section to fit in, and you tighten them down to pull them into, the underside of the wood. This allows you to use bolts instead of screws, so that if you pull em in and out several times, you won't degrade the threads. The length wouldn't matter either. [ATTACH type="full" alt="1688961214468.png"]50155[/ATTACH] [/QUOTE]

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