[SEL] OTnow homebuilding - now nails rulez

Al Harris al.harris at rustic-engines.com
Fri Dec 19 20:42:59 PST 2008


> http://www.metacafe.com/watch/967794/shear_strength_of_nails_drywall_screws_amp_construction_screw/

Cheers,

Al Harris
Summer Clarence Coast NSW Oz

al.harris at rustic-engines.com



Tim Christoff wrote:
> Tim Christoff
> Basehor Kansas
>
>
>   
>> [Original Message]
>> From: Dave Merchant <kosh at ncweb.com>
>> To: The SEL email discussion list <sel at lists.stationary-engine.com>; The
>>     
> SEL email discussion list <sel at lists.stationary-engine.com>
>   
>> Date: 12/19/2008 8:10:07 PM
>> Subject: Re: [SEL] OT////// AM transmitter - now homebuilding
>>
>> New deck screws are coming thru in the US with T25 Torx heads.
>> Gives a real positive drive, but don't know how they'd be to remove
>> after a few years exposure.
>>     
>
> They seem to come back out very well as long as the head isn't packed with
> dirt.  Pretty pricy though.
>   
>> Previously in the US, deck screws used a "combo" head, square drive
>> superimposed on Phillips. Gave a lot of engagement for the matching
>> driver, really worked well, but the T25 seems slightly better.
>>     
>
> The square drives are great as long as you use just a square tip, that
> combo tip is still too much like a phillips bit and will still start
> stripping them out after the first 100 or so.
>   
>> Cement board screws here have square drive, and it's real easy to
>> strip the square out to round, especially with the super-hard old pine
>> studs + joists in our old house. Worst is square drive in some stainless
>> screws we tried to use. The stainless is too soft, stripped out many
>>     
> heads.
>
> There is one stainless screw out there (don't know the name) but I never
> could strip one.  One of my customers had gotten ahold of a 50lb box of
> them and I never could find them after that.
>   
>> Deck screws, at least in the US, have a very special coating, since the
>> enviro-crazies got the normal green pressure treated timber banned.
>>     
>
> Might want to check out the patten office on that one.  Seems like just
> when CCA was determined bad for the enviroment, 3M's process patten ran
> out.  Thats when they came out with ACQ and yes, that stuff will eat
> through damn near anything.
>
>   
>> The replacement is also green, but is about 4 times more corrosive
>> to fasteners than the old stuff. (Manufacturer's statement, not mine!)
>>
>> We built a scaffold last year from pressure treated + 1/2" chromated
>>     
> bolts.
>   
>> Had it up for 2 weeks before dismantling it, and the bolts look like 
>> battery terminals.
>>     
>
> You should see what it does to a triple dip post mount after 2 months.
>   
>>> Those screws are also excellent for screwing 4x2 cleats to your trailer 
>>> deck to
>>> help keep engines from moving around.  I like #10 x 3" long.
>>>
>>> I just thought, what the hell, lets say something about ENGINES for a
>>>       
> change.
>   
>>> 8-)))
>>>
>>> See ya,  Arnie
>>>       
>



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