If you want to work with wood, you will need to use clamps and/or
screws [nails ok]. Pick a method you like and makes sense for
the design. Some ideas. If you make furniture quality enclosures,
visible screws w/countersinks looks ugly. Finish nails are ok as you
can use a punch to drive the nail further deep in the wood then
cover the pinhole with putty.
Clamps are nice, wood-on-wood with good glue + clamps yields the best
eye candy but assembly takes longer as you may only be able to do sections
at a time and you have to wait for the glue to dry.
People say the wood/glue joint is stronger than the wood, therefore
just using glue and no screws/nails is ok. This is true for wood,
but MDF is not really wood. MDF may have a 'skin' on the surface
whereas if you do a simple butt joint using MDF on MDF with glue
only, after it dries and if you were to bend the wood, the wood
joint would break. The MDF + skin layer is still intact, but the
skin + MDF core joint is broken, ie.,
MDF board
MDF piece #1 - skin layer
MDF piece #1 - core layer
MDF piece #1 - skin layer
MDF Edge
MDF piece #2 - core layer
When you mate the two in a butt joint you get;
MDF piece #1 - skin layer
MDF piece #1 - core layer
MDF piece #1 - skin layer
glue
MDF piece #2 - core layer
If you bend the two pieces after the glue dries, piece #2 core
will not break from the MDF piece #1 - skin layer, but what
does break is the MDF piece #1 - core layer // MDF piece #1 - skin layer area.
Most people don't care because they don't use MDF to make
durable boxes that take heavy abuse, so a clamped MDF box
with bracing is nice for DIY home audio, but not good for
prosound 'touring/DJ' audio where the boxes are transported
all the time. Iff the MDF box fell on the floor, the MDF
itself can crack or that MDF skin joint breaks if you don't have
screws to keep it together.
If you do want to use screws, perhaps to speed up assembly and
maybe to make it easy on yourself, and if you plan to veneer the
MDF box, I would use drywall screws predrilling the holes to
prevent MDF cracking and then countersink the hole so the screw
is below the surface. You can do this to line up the joint, then
apply the glue and screw it together. You can do all the box
assembly easy this way and it's solid. Use some putty to plug the
hole, then do the veneer.
If you are a beginner to woodworking, you will notice that quality
clamps aren't cheap so you may need to use the screw method
if you don't want to invest in more tools.
screws [nails ok]. Pick a method you like and makes sense for
the design. Some ideas. If you make furniture quality enclosures,
visible screws w/countersinks looks ugly. Finish nails are ok as you
can use a punch to drive the nail further deep in the wood then
cover the pinhole with putty.
Clamps are nice, wood-on-wood with good glue + clamps yields the best
eye candy but assembly takes longer as you may only be able to do sections
at a time and you have to wait for the glue to dry.
People say the wood/glue joint is stronger than the wood, therefore
just using glue and no screws/nails is ok. This is true for wood,
but MDF is not really wood. MDF may have a 'skin' on the surface
whereas if you do a simple butt joint using MDF on MDF with glue
only, after it dries and if you were to bend the wood, the wood
joint would break. The MDF + skin layer is still intact, but the
skin + MDF core joint is broken, ie.,
MDF board
MDF piece #1 - skin layer
MDF piece #1 - core layer
MDF piece #1 - skin layer
MDF Edge
MDF piece #2 - core layer
When you mate the two in a butt joint you get;
MDF piece #1 - skin layer
MDF piece #1 - core layer
MDF piece #1 - skin layer
glue
MDF piece #2 - core layer
If you bend the two pieces after the glue dries, piece #2 core
will not break from the MDF piece #1 - skin layer, but what
does break is the MDF piece #1 - core layer // MDF piece #1 - skin layer area.
Most people don't care because they don't use MDF to make
durable boxes that take heavy abuse, so a clamped MDF box
with bracing is nice for DIY home audio, but not good for
prosound 'touring/DJ' audio where the boxes are transported
all the time. Iff the MDF box fell on the floor, the MDF
itself can crack or that MDF skin joint breaks if you don't have
screws to keep it together.
If you do want to use screws, perhaps to speed up assembly and
maybe to make it easy on yourself, and if you plan to veneer the
MDF box, I would use drywall screws predrilling the holes to
prevent MDF cracking and then countersink the hole so the screw
is below the surface. You can do this to line up the joint, then
apply the glue and screw it together. You can do all the box
assembly easy this way and it's solid. Use some putty to plug the
hole, then do the veneer.
If you are a beginner to woodworking, you will notice that quality
clamps aren't cheap so you may need to use the screw method
if you don't want to invest in more tools.