? about mdf

[silvercookie 5,000+ posts]

when screwing or nailing the boards together is it normal for it to split a little?

any way the pics here are the pics of the finished box. 1 cube @32htz

it is for 2 8"s that i bought off of brtnboarder notin spectacular. just for use in my room on a old receiver. right now i have it hooked up to a crunch running 140wx2 running off of a deka 60

credits to fargof for designing the box

uploading pics.

thats only good size pic all the other ones dont want to resize.

messy room ftl

Click to read more...

 

[jco1385 5,000+ posts]

pre-drill and no nails. wood should not split

 

[RAM_Designs 5,000+ posts]

I always use a 1/16 drill bit to pre-drill with, and then follow it up with something to countersink the screw heads. Without a doubt the best kind of nail/screw I have ever used are 1.25" coarse thread drywall screws. The thread is spaced out much further and really grips the MDF well, as opposed to other screws that tend to shred the mdf apart after screwing and unscrewing several times...then you end up stripping the hole.

 

[PV Audio 5,000+ posts]

I always use a 1/16 drill bit to pre-drill with, and then follow it up with something to countersink the screw heads. Without a doubt the best kind of nail/screw I have ever used are 1.25" coarse thread drywall screws. The thread is spaced out much further and really grips the MDF well, as opposed to other screws that tend to shred the mdf apart after screwing and unscrewing several times...then you end up stripping the hole.

//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif Use a larger diameter

 

[DBDRAGGUY 10+ year member]

just like everyone else stated, you must pre-drill. And I agree on the 1.25 corse thread drywall fasteners.

 

[RAM_Designs 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif Use a larger diameter

I don't need to //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif I never have my MDF split when I predrill with a 1/16 bit.

What size do you normally use, 1/8?

 

[audioarsonal 10+ year member]

I agree per-drill is the best to avoid this.I also put a dab of wood glue in the hole just prior to screwing it down.This will squeeze out through any little hairline cracks that maybe in the wood.

 

[RAM_Designs 5,000+ posts]

I agree per-drill is the best to avoid this.I also put a dab of wood glue in the hole just prior to screwing it down.This will squeeze out through any little hairline cracks that maybe in the wood.

What do you use for adhesive on the rest of the box?

 

[Dingleberry 10+ year member]

#6 Countersink bit

Plus #6 sheet metal screws.

Screwing vs. nailing. I like screwing:fyi:

 

[audioarsonal 10+ year member]

I only use TBII for my adhesive.The dab is just a little insurance I guess.Not really manditory, but if you try it some time you will see what I'm talking about.

 

[RAM_Designs 5,000+ posts]

I only use TBII for my adhesive.The dab is just a little insurance I guess.Not really manditory, but if you try it some time you will see what I'm talking about.

I'll have to try that some time. I use construction grade subfloor adhesive for all of my joints, and it's stronger than anything I've tried before...and I get it for free also //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[audioarsonal 10+ year member]

#6 Countersink bit

Plus #6 sheet metal screws.

Screwing vs. nailing. I like screwing:fyi:

That counter sink is the best...As for sheet "metal" screws???I would stick with 1 1/4 corse thread drywall.Inexpensive and do a better job IMO.

 

[RAM_Designs 5,000+ posts]

As for sheet "metal" screws???I would stick with 1 1/4 corse thread drywall.Inexpensive and do a better job IMO.

x2

They definitely make mounting holes last longer than any other screw I have used.

 

[silvercookie 5,000+ posts]

i was just wondering cause i pre-drilled and then when i put the screws in it split a little bit

i predrilled with 3/32 and used i think it was #6 sheet metal screws. i used 3/4 mdf

i think the screws were a little long though.

pics will be in first post.

 

[RAM_Designs 5,000+ posts]

i think the screws were a little long though.

pics will be in first post.

I used to use 2-2.5" screws when I first started doing boxes and found out shortly that it was just a hassle and unnecessary to use screws that long. The 1.25" coarse thread drywall screws are just the right length and have an insane amount of grip.