Not sure how to word this - Flush Mounted MDF Rings?

[AMI CUSTOMS]

Here is my technique and it works for years now, been doing this on dozens of installs, for subs, I never use tnuts but instead use #10 pan head steel screws you can get a box of like 100 for cheap, I use 1.5 inch long and use that in conjunction with a 1.5 inch or thicker baffle, on some I have reused the same holes over a dozen times with 60 lb woofers. For removable and tunable ports I use tnuts usually 5/16 cuz they are less likely to spin on you and strip out and I use in conjunction with those gorilla glue on the points of the tnut that way those sucker don't move.

[rickyfromthe407]

Here is my technique and it works for years now, been doing this on dozens of installs, for subs, I never use tnuts but instead use #10 pan head steel screws you can get a box of like 100 for cheap, I use 1.5 inch long and use that in conjunction with a 1.5 inch or thicker baffle, on some I have reused the same holes over a dozen times with 60 lb woofers. For removable and tunable ports I use tnuts usually 5/16 cuz they are less likely to spin on you and strip out and I use in conjunction with those gorilla glue on the points of the tnut that way those sucker don't move.

That's pretty much what I use #10 panheads length depending on the MDF thickness. But the question is what about when you remove the subs? You can't just drill a #10 back in there because since it's practically sawdust if your lucky you'll get a tight hold. Which is why a metal ( or hurricane nut ) would come in handy. From what I cam gather the hurricane nuts are easier to use and you get just about the same strength. Mind you that I am not doing a wall holdin an 80+ lb sub. I'm Doing 25lb subs upfiring. But I was really just asking questions to learn a little more..incase someone were to ask me I could pass on the knowledge.

But thanks everyone for the input. I did learn a bit! He'll didn't know these existed before I posted

[AMI CUSTOMS]

I have never had a problem with the pan screw going back in and holding fine. I have taken some of my hdc3s in and out over a dozen times easy. Still hold just as strong.

[RAM_Designs]

I've never had a problem just drilling into MDF with coarse thread screws...

[rickyfromthe407]

I have never had a problem with the pan screw going back in and holding fine. I have taken some of my hdc3s in and out over a dozen times easy. Still hold just as strong.

I've never had a problem just drilling into MDF with coarse thread screws...

I must be doing something wrong It usually gives a good strong hold the first couple of times and gradually gets weaker.

I also use pan head screws to hold the subs in place. But after I remove the subs a few times the holes seem to get much weaker.