Will it hold?

[paul24dual]

Stupid question
I'm building a workbench this weekend out of 4 x 2 timber as it says in this video

http://www.woodworkingformeremortals.co ... bench.html

It says use 2 1/2" decking screws which i have bought, but they are only 4 mm threads and look a bit small

Do you think these will be ok?

Thanks
Paul

 

[tool-me-up]

Depends on what type of joint and how much glue you have added...
If you are butt jointing and putting a few screws into the end-grain then yes it will hold - until you use it :shock:

 

[MMUK]

2" thick timber and screws only 2 1/2" long? :shock:

If you're screwing through 2" thick timber you should really be using screws 3 1/2" long, or 4" if you are screwing into end grain.

Also, I've only used "yellow" wood glue once - the dog pee'd up the bottle :lol:

 

[carlb40]

Ahh the problem here is the american PAR timbers. Ours comes up roughly 1/4 of an inch smaller than the sawn size. The usa timbers are a good half inch smaller.

So our timbers 4 x 2 = 3 3/4 x 1 3/4 inch or 95mm x 45mm
usa timbers are about 3.5'' x 1.5''

The recommended screw size is normally about 1.5 times? the thickness of the timber

But i would normally use 3 or 3.5 inch screws for joining 4 x 2 timbers or similar.

 

[paul24dual]

Cheers for the replies

It is planed timber - 44mm deep

I've got some 80mm brass screws. will these be ok?

Thanks

 

[carlb40]

80MM screws will be fine

 

[undergroundhunter]

Brass will also look better just be careful not to snap the heads off.

Matt

 

[SteveF]

pre drill or wind some cheap screw and then replace with the brass