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Square Holes

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Paul Fox

11-12-1998 07:55:30




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I'm repairing a horse-drawn spike tooth harrow. Many of the clamps that hold the spikes in place are corroded beyond repair,
and some are missing entirely. Is there an economical and reasonalby quick way to make 5/8" square holes in 1/8" thick black
iron strap stock? I've looked at punches from Greenlee, but they are only rated for 14ga. metal, and a bit too precious for my
budget. I can't imagine being able to make an accurate enough hole with a torch, certainly not at my skill level. I am not willing
to weld the spikes to the bars, and in fact spent quite a bit of time undoing "repairs" done this way earlier. Alternatively, does anyone know where I might be able to purchase such clamps ready-made? If that seems likely, I could provide a dimensioned drawing.
Thanks.

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Joe Fabregas

11-12-1998 16:11:36




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 Re: Square Holes in reply to Paul Fox, 11-12-1998 07:55:30  
You could check with a truck spring shop, or a fabrication shop that has an iron worker. They could knock them out in no time. The iron worker punches are cheaper than the greenlee ones, but harder to find, plus you'd need some umpf to push them. The drill and file works good, but slow. If you burn the holes, and drive a square punch into the hole while it is still red, you could get a decent job. I've found square punches at flea markets and garage sales. If you've got the torch you could hammer one out. You wouldn't have to harden it if you punch the holes hot. The $20 used one doesn't sound too bad either. Good luck, Joe Fabregas [email protected]

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Paul Fox

11-13-1998 03:26:49




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 Re: Re: Square Holes in reply to Joe Fabregas, 11-12-1998 16:11:36  
: You could check with a truck spring shop, or a fabrication shop that has an iron worker. They could knock them out in no time. The iron worker punches are cheaper than the greenlee ones, but harder to find, plus you'd need some umpf to push them. The drill and file works good, but slow. If you burn the holes, and drive a square punch into the hole while it is still red, you could get a decent job. I've found square punches at flea markets and garage sales. If you've got the torch you could hammer one out. You wouldn't have to harden it if you punch the holes hot. The $20 used one doesn't sound too bad either. Good luck, Joe Fabregas [email protected]

Thanks Joe...The idea about punching them while the piece is hot came up on the Tools board too. That sounds like the most efficient way to go about it. Plus, it lets me play with my torch, which is always fun. I'll let you know how it works out.

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E.Allison

11-12-1998 11:19:26




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 Re: Square Holes in reply to Paul Fox, 11-12-1998 07:55:30  
: I'm repairing a horse-drawn spike tooth harrow. Many of the clamps that hold the spikes in place are corroded beyond repair,
: and some are missing entirely. Is there an economical and reasonalby quick way to make 5/8" square holes in 1/8" thick black
: iron strap stock? I've looked at punches from Greenlee, but they are only rated for 14ga. metal, and a bit too precious for my
: budget. I can't imagine being able to make an accurate enough hole with a torch, certainly not at my skill level. I am not willing
: to weld the spikes to the bars, and in fact spent quite a bit of time undoing "repairs" done this way earlier. Alternatively, does anyone know where I might be able to purchase such clamps ready-made? If that seems likely, I could provide a dimensioned drawing.
: Thanks.

First drill a undersize hole and then file. A sharp file (Bastard or second cut) will cut this stuff with ease. Make a templet and scribe the hole outline before you start. After 5 holes you'll be an expert. EEA

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Matthew von Hobe

11-12-1998 09:08:45




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 Re: Square Holes in reply to Paul Fox, 11-12-1998 07:55:30  
How 'bout cheating? Pick up another one for spare parts. Got a couple at the Colorado Draft Horse & Equipment Auction for about $20 apiece.
Otherwise can you drill a big enough hole to wedge the square spikes in place - yeah, yeah, I know... the square peg in the round hole. :)



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Matthew G. von Hobe

11-17-1998 09:37:44




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 Re: Re: Square Holes in reply to Matthew von Hobe, 11-12-1998 09:08:45  
In making some repairs to an OLD horse-drawn road grader,
and a seed drill, I made a couple visits to a welding shop run
by a couple of older gentlemen. They wre DELIGHTED to
play a part in that sort of project and quarreled between
themselves about which one of them got to do which work!
And their prices were ridiculously low. If you don't have
anyone like that available to you where you are, it might
be possible to enlist these guys to fabricate what you need.
Happy to help!

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