Wood filler. Drywall mud?

[jt4x4]

What does everyone use to fill gaps/screw holes/et cetera in their woodwork? I bought a product called "Plastic Wood", and I did not have satisfactory results (not to mention I have to come up with a new name for my ***** company now).

Can I use drywall mud? It sure works well on drywall. Please don't criticize the question without facts or reasoning. I honestly don't know how mud stands up to vibrations caused by subwoofers, which is why I'm asking the experts.

I have sealed the inside of the box with caulk. I'm only trying to make the outside flat so I can finish it with either carpet or bedliner.

Thanks in advance.
- Joe

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[THATpurpleKUSH 5,000+ posts]

Use bondo. It's wood reinforced fiberglass resin.

Drywall mud is some of the worst material you could use. Its brittle, shrinks, is prone to cracking under stress and doesnt bond well to non porous surfaces like mdf.

The good Plastic Wood to buy is the solvent based stuff. The water based is awful. You probably used the water based if you had a bad experience, Plastic wood is usually pretty good.

 

[Popwarhomie 5,000+ posts]

I make my own out of MDF dust and wood glue.

 

[jt4x4]

I make my own out of MDF dust and wood glue.

I have seen EXOcontralto mix saw dust and glue to fill gaps. Is that similar to what you do? If not, please give me more details.

Thanks for the response!

- Joe

 

[audiobaun 5,000+ posts]

Liquid Nail works. Hardens up and can be sanded smooth

 

[Popwarhomie 5,000+ posts]

I have seen EXOcontralto mix saw dust and glue to fill gaps. Is that similar to what you do? If not, please give me more details.

Thanks for the response!

- Joe

Yes, I taught him that and he post it on youtube to make money.

 

[jt4x4]

Yes, I taught him that and he post it on youtube to make money.

Well that's a shitty move. I can't think of a way to phrase this that doesn't sound sarcastic, so I'll just post it and hope you take it as genuine...

Do you have a youtube channel that I can view to avoid supporting people who marketize info they have learned from others?

 

[Mikey0075]

What does everyone use to fill gaps/screw holes/et cetera in their woodwork? I bought a product called "Plastic Wood", and I did not have satisfactory results (not to mention I have to come up with a new name for my ***** company now).

Can I use drywall mud? It sure works well on drywall. Please don't criticize the question without facts or reasoning. I honestly don't know how mud stands up to vibrations caused by subwoofers, which is why I'm asking the experts.

I have sealed the inside of the box with caulk. I'm only trying to make the outside flat so I can finish it with either carpet or bedliner.

Thanks in advance.
- Joe

Elmer's glue mixed with saw dust

 

[Lasherž]

Great video comparing wood glues. Who knew they were so different? Yeah for fill just saw dust and wood glue is pretty much as good as it gets, but it'll be plenty strong.

 

[1aespinoza 10+ year member]

I actually use drywall mud. But I use the powdered form. Once dried it is waterproof, you can actually make a cup out of it. It bonds like cement and hardens to a sandable surface. It is cheap, easy to work, and you have options on drytime. If inexperienced, I recommend the 30 minute bag, it will dry in your tray if you are slow. Depending on the fill hole size, you may have shrinkage. At the drying times this provides I do not find this an issue. It also paints quite well.

 

[1aespinoza 10+ year member]

I actually use drywall mud. But I use the powdered form. Once dried it is waterproof, you can actually make a cup out of it. It bonds like cement and hardens to a sandable surface. It is cheap, easy to work, and you have options on drytime. If inexperienced, I recommend the 30 minute bag, it will dry in your tray if you are slow. Depending on the fill hole size, you may have shrinkage. At the drying times this provides I do not find this an issue. It also paints quite well.

On another note; I have never made a box for over 2k watts. So I do not know how well it will hold up in a flexing box situation.

 

[Lasherž]

On another note; I have never made a box for over 2k watts. So I do not know how well it will hold up in a flexing box situation.

It will hold up, but not so well for moisture and the fact that it shrinks isn't good and it's not a permanent binding like wood glue. I think as long as you're not using it to actually adhere the boards it's fine, but since saw dust is cheap and so is wood glue it seems a bit silly to use an inferior product for ease of sanding. Neither will look right when stained and both will take paint just fine. Ideally there wouldn't be gaps in the wood to begin with (jointer for the cuts and marine grade plywood won't have knots in the middle).