Which screw head design: SQ, Torx, phillips ACR, Spax - Page 2 - Woodworking Talk - Woodworkers Forum
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post #21 of 37 Old 03-01-2014, 11:04 AM
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Quote:
Originally Posted by Manuka Jock View Post
As well as the variables of metal quality in screws and driver bits , and of screwdrivers , both machine and manual ,
there is the totally unpredictable one of the timber being used .

Matching up screws to bits for a firm fit as well as metal quality helps , as does pre drilling , and consideration for machine speed and torque.

And leave the impact driver in it's case . It is for use with hex head fasteners , not finishing screws .

Personally , I'm waiting for the advent of triangle-head screws
Triangle head style was patented in 1875

http://vintageinternetpatents.com/tools.html#fasteners

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post #22 of 37 Old 03-01-2014, 11:11 AM
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Originally Posted by FrankC View Post
Triangle head style was patented in 1875

http://vintageinternetpatents.com/tools.html#fasteners
It doesn't appear to have gone into production as a woodscrew though
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post #23 of 37 Old 03-01-2014, 03:21 PM
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Originally Posted by Steve Neul
I really don't care which screw type they use. I wish the world would pick ONE and ban the rest. It's getting where you have to carry a pocket full of different drive bits to work on anything.
OK Steve as long as the world doesn't choose slotted
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post #24 of 37 Old 03-01-2014, 03:58 PM
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I'll stick to the square socket which is the original, Canadian, Robertson head design.
I buy the "contractor" packs of driver bits and don't blink when I lose one. . . or two. . . .
#8 for most of my crude woodwork (grape vine trellis, etc), #12 & #14 in the fences.

Have to give the Chinese credit: they decided that there would be one wood
screw head design and everybody use it. While they may be making others for
off shore sales, Robertson is the single domestic wood screw.
At least, that's what I think they did.
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post #25 of 37 Old 03-01-2014, 04:57 PM
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If you've ever run across some strange screw head when working on something electronic, you may appreciate an inexpensive kit from HF with an assortment of strange bits that may CYA. I've gotta say this kit was worth the cost and more the first time I found the bit I needed.
http://www.harborfreight.com/100-pie...l#.UxJEgYX-DIU





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post #26 of 37 Old 03-01-2014, 05:10 PM
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Originally Posted by rrich
I have to agree with Mr. Miller. If you use the appropriate size driver, the drivers should last almost forever. tip: There are two types of driver bits. One type is two part metal with what appears to be a hardened tip while the other type is a single piece of metal. The former last for years while the latter is best bought in lots of 50 on special at Lowe's. One other thing. There are screws that are combination Robertson and Phillips. Regardless of driver bit, neither work very well.
There are special bits for those. I find them mostly in electrical stuff.
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post #27 of 37 Old 03-01-2014, 05:20 PM
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Quote:
Originally Posted by johnep34
I use Pozidrive which are a variation on Phillips. johnep
The Phillips head was designed to cam out at torque. It was originally developed fo General Motors back before torque clutched power drivers.

The pozidrive was designed to still be self centering but not cam out on torque. I think it originated in Germany at about the same time as torque clutched drivers.
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post #28 of 37 Old 03-01-2014, 05:38 PM
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Originally Posted by Manuka Jock View Post
Interesting , but no cigar .
They're not woodscrews , but thats the idea . The driver bit would be the same
They had wood screws too, I just saved the wrong image.
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post #29 of 37 Old 03-01-2014, 06:28 PM
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Originally Posted by Steve Neul View Post
They had wood screws too, I just saved the wrong image.
Oh ok .
Who are they , no link with the photo
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post #30 of 37 Old 03-01-2014, 09:25 PM
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Quote:
Originally Posted by DST

OK Steve as long as the world doesn't choose slotted
I have a full set of English made slotted screw...can openers. Don't know what I was thinking when I bought them 25 years ago.

Al

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post #31 of 37 Old 03-01-2014, 09:31 PM
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I like the square drives when I have to use them on woodworking projects. Square drives come in small head designs which can be a big help. My favorite fixture building screw is those deck screws with the torx head.

I also like to drag the screw through a cake of bees wax when driving them. Really makes it go in easy.

Al

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Last edited by Al B Thayer; 03-01-2014 at 09:33 PM.
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post #32 of 37 Old 03-01-2014, 09:48 PM
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I also like to drag the screw through a cake of bees wax when driving them. Really makes it go in easy.

Al

Nails only hold themselves.
+1 on the wax. I have a new wax ring that I have used for years. Dad had a hammer with a hole in the handle for waxing nails before driving them.

Jon
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post #33 of 37 Old 03-01-2014, 10:42 PM
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Oh ok .
Who are they , no link with the photo
After a second look they look more like sheet metal screws. http://www.aliexpress.com/promotion/...promotion.html
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post #34 of 37 Old 03-01-2014, 11:10 PM
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Quote:
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After a second look they look more like sheet metal screws. http://www.aliexpress.com/promotion/...promotion.html
Self tapping, BTW.





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post #35 of 37 Old 03-02-2014, 01:21 AM
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yeah , I had seen the self tappers on google images .

If the triangle drive stands up to sheet metal work , it would be a shoe in for timber .
Ah well , one day maybe
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post #36 of 37 Old 03-03-2014, 12:09 AM
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Why would the triangle head be better than Robertson head?

Use the right tool for the job.

Rich (Tilting right)
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post #37 of 37 Old 03-03-2014, 01:54 AM
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Quote:
Originally Posted by rrich
Why would the triangle head be better than Robertson head?
The angle at the corner is more acute thus it is less likely to round over.
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