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tailgate chain hole location in pocket #1307463 Wed Apr 17 2019 09:20 PM
Joined: Mar 2010
Posts: 78
A
apba12m Offline OP
Shop Shark
since my pockets are new and did not come drilled for the chain mount what is the location dimension to drill the hole? also was it a square hole...Lou


1951 chevy 3100 short bed frame off resto.
Re: tailgate chain hole location in pocket [Re: apba12m] #1307491 Thu Apr 18 2019 01:13 AM
Joined: Jan 2017
Posts: 334
4
49 3100 Offline
Shop Shark
How do you drill a square hole??

Re: tailgate chain hole location in pocket [Re: 49 3100] #1307509 Thu Apr 18 2019 02:34 AM
Joined: May 2015
Posts: 1,768
K
klhansen Offline
Shop Shark
Originally Posted by 49 3100
How do you drill a square hole??

With a square drill bit, of course. grin






Just drill a round one and file the corners out. You can just drive the square head (carriage style) bolt in once you get close.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos
Busting rust since the mid-60's
Re: tailgate chain hole location in pocket [Re: apba12m] #1307523 Thu Apr 18 2019 03:27 AM
Joined: Aug 2018
Posts: 334
2
2ManyTrucks Offline
Shop Shark
I do my squares the old fashioned way, with a triangle file (because a square file will leave the corners over 90)
I filed about 2 dozen squares for the metal strips in the box floor
I started with a square file, but it soon became apparent that the reason triangle files exist is because they make square hole much easier
-s

Re: tailgate chain hole location in pocket [Re: Harold46] #1307531 Thu Apr 18 2019 05:23 AM
Joined: May 2015
Posts: 1,768
K
klhansen Offline
Shop Shark
Originally Posted by Harold46

Those are actually driver bits for square recess (Robertson) screws. A #2 square bit is less than 1/8 inch across, so wouldn't make a very big square hole if used in a hammer drill with rotation turned off. But if a guy made a similar tool in the right size, that would make swageing or broaching a square hole a piece of cake.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos
Busting rust since the mid-60's

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