What kind of screws should I use to connect a metal bracket to 3/4"-thick particle board? (The screws must not go all the way through the particle board).
(The original screws are blunt -- not pointed (like a wood-screw) -- and the threads look more parallel than angled).
How do I drill pilot holes for the new screws? In addition to the screws, should I use any glue?
gary wrote in news: snipped-for-privacy@googlegroups.com:
If you're just holding the particle board in place, like building a shelf, sheet metal screws will be fine. #10 would be a good place to start. I may or may not even bother with a pilot hole, it just depends on the exact situation. Particle board tends to be soft, so is fairly forgiving of pilot hole size.
If you do go with pilot holes, drilling them on the drill press would be a good idea. It's easy to drill too far with a hand-held drill.
Puckdropper
I've already tried sheet-metal screws and wood screws but both pull out of the particle board.
The Lee Valley web site says that these Lo-Root will work for particle board. I can't see how glue will help much ?
John T.
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gary wrote in news: snipped-for-privacy@googlegroups.com:
If stuck with the particle board, here's how I'd approach it.
Option 2 would be to route out sections of the particle board and replace it with 1/2" pineywood or similar. (You can use thicker wood if you don't mind it hanging below the surface.) The wood would be glued in place with regular wood glue after being sized to fit.
Puckdropper
Uhhh...with a drill and bit, bit size the same(or smidge smaller) than the diameter of the screw shank.
No
You would do better to insert T-nuts on the back side of the particle board and use bolts to attach the bracket.
If you just gotta use screws, the coarse threaded ones made for PB work best. Any screw will work better if you screw in the screw, remove it, squirt crazu glue into the hole, let it dry (it is dry when th eodor is gone) then re-insert the screw.
I bet you already got plenty of opinions on the screws so i will just say consider using a piece of wood if you can
if you no wood than definitely use glue for the screw and metal plate
recently had to repair a particle board horror and was surprised how well titebond held a met collar in place
used a lot of glue and let it dry for several days and the thing is very secure
this was a quick fix and should last long enough but i would have swapped out for real wood if i had to look at it or use it
For my application, the T-nuts would be installed on the TOP of the desktop and holes would be drilled THROUGH particle board so bolts could be used t o attach the bracket. My original question said: "The screws must NOT go al l the way through the particle board".
So I will be using threaded inserts.
For my application, the T-nuts would be installed on the TOP surface of the desktop and the holes would be drilled THROUGH particle board so bolts could be used to attach the bracket on the BOTTOM surface of the desktop.
My original posting said: "The screws must NOT go all the way through the particle board".
So I will be using threaded inserts.
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