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  Topic Review (Newest First)
09-26-2015 10:44 PM
bobditts
Quote:
Originally Posted by The Hobbyist View Post
Car audio stuff? Are you confusing MDF with particle board? They aren't the same thing.

not confusing them at all. definitely well aware of the differences. MDF is popular in the car audio world for building speaker enclosures due to its low cost, density, and strength.

here is a link to a man who sells router bits that are primarily made to be used on MDF in the car audio world. http://www.12vtools.com/
09-26-2015 07:16 PM
subtleaccents For those of you that have to work with or have worked with in the past as I have, here are some small suggestions to help make it easier to complete the project. As stated by some of the members it does shorten the life of the cutting tools, makes dust collection nothing short of a nightmare and the surfaces that were machined are as porous as you can get. You can't or should I say shouldn't run fasteners into the edges (end grain if you please) because it will split even with predrilling if you are looking for the fasteners to hold.

I always used biscuits and glue at mating edes and when finishing the project I had excellent results with Sherwin Williams Sher-Wood Vinyl Sealer 24% solids. Stock codes T67 F 3 and 520-3997.
This sealed the MDF exceptionally well as a base for the top coat.
Now mind you, this stuff is expensive. Depending on where you can get this sealer it can cost between $55 and $65 per gallon. But if you need to finish MDF this is good stuff.

If you don't have to work with this material, I would suggest not to start but you don't know when there is no choice.
09-26-2015 05:07 PM
RainMan 2.0
Quote:
Originally Posted by honesttjohn View Post
Nah - - that would just make us egg you on to put it up, buy more, and finish the job.

HJ
Yes that's my concern to
09-26-2015 03:52 PM
honesttjohn
Quote:
Originally Posted by RainMan1 View Post
I wonder if I just bought one bundle , if that would quite it down a notch ?
Nah - - that would just make us egg you on to put it up, buy more, and finish the job.

HJ
09-26-2015 03:09 PM
RainMan 2.0
Quote:
Originally Posted by honesttjohn View Post
MDF doesn't even make good insulation, any way you apply it.

HJ

+1 on the Baltic Birch
I wonder if I just bought one bundle , if that would quite it down a notch ?
09-26-2015 03:06 PM
honesttjohn MDF doesn't even make good insulation, any way you apply it.

HJ

+1 on the Baltic Birch
09-26-2015 12:44 PM
RainMan 2.0
Quote:
Originally Posted by rcp612 View Post
I guess I must disagree with most. All but one of my mobile bases are MDF with no regrets.
If you "size" the ends with 50/50 water/glue, and, use a lower torque on your drivers when screwing, the MDF will work very well for. And is much cheaper than plywood for shop fixtures.
Oh, BTW, I also drilled pilot holes for all screws and added 1 or 2 drops of thin CA for extra strength.
Attached is a pic of my first shop "furniture" which, sadly had to be replaced during my downsizing. That is entirely 3/4" MDF except for 3/4" poplar blocks in each corner of the base for caster installation.
The person that bought this is still using it today making that project about 10 years old by now.
Nice job Roger . I use 1" mdf for my work bench tops . They get sales on 4'/5' 1" mdf once in a while and it's worked great for me . I was going to use it for a router top but the guys here convinced me otherwise . I think it would be fine as long as it has support underneith to stop it from flexing , and isn't in a humid climate .
I'm a Baltic Birch guy now though , just love the stuff !
09-26-2015 07:56 AM
rcp612 I guess I must disagree with most. All but one of my mobile bases are MDF with no regrets.
If you "size" the ends with 50/50 water/glue, and, use a lower torque on your drivers when screwing, the MDF will work very well for. And is much cheaper than plywood for shop fixtures.
Oh, BTW, I also drilled pilot holes for all screws and added 1 or 2 drops of thin CA for extra strength.
Attached is a pic of my first shop "furniture" which, sadly had to be replaced during my downsizing. That is entirely 3/4" MDF except for 3/4" poplar blocks in each corner of the base for caster installation.
The person that bought this is still using it today making that project about 10 years old by now.
09-25-2015 10:44 PM
RainMan 2.0
Quote:
Originally Posted by The Hobbyist View Post
Car audio stuff? Are you confusing MDF with particle board? They aren't the same thing.
I doubt there's any place for particle board in car audio , at least I pray not .
This is the beginning of an amp rack I was building using MDF



These door pods I built are made from mdf and bondo wrapped with vinyl .

09-25-2015 10:20 PM
jschaben
Quote:
Originally Posted by The Hobbyist View Post
Car audio stuff? Are you confusing MDF with particle board? They aren't the same thing.
I've made car speaker enclosures and even a custom shift insert from 1/4" MDF. Haven't found much use for particle board other than the occasional template or making as test fitting a piece and using that as a setup jig.
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