Metal casting

Those look like sled runner bolts. They can be fabricated from ordinary carriage bolts by forging the head in a shaped hardy-hole. You needn't cast new ones.

LLoyd

Reply to
Lloyd E. Sponenburgh
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Those are forged not cast.

AWEM

Reply to
Andrew Mawson

I need to either make some small metal bolts myself or have them cast. Does anyone know of a cheap way to do it my self, with green sand? or RTV? or know of a place that could do it?

Here's a pic of what I need to make, the bolt on the left. It's cast is some sort of white metal, maybe some brass content.

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Thank you, Jim

snipped-for-privacy@zarwerks.com

Reply to
Jim Bremer

This looks very close to a plow bolt . Go check as a farm equipment dealer and see if they will work as is or can be modified . I suspect this would be a lot easier then making them from scratch . Luck Ken Cutt

Reply to
Ken Cutt

Lloyd sez:

"> Those look like sled runner bolts. They can be fabricated from ordinary

Lloyd, please elaborate a little on "forging" and "hardy-hole". You are talking about heating the head beyond red and hammering it into a hole (die) of the desired shape - no?

Bob Swinney

Reply to
Robert Swinney

Precisely. If you want a good lesson on how, track down a copy of the old PBS documentary "Ben's Mill".

In that show, Ben (who runs an authentic water turbine New England wood mill) makes a mocassin-runner firewood sled from scratch, and forges runner bolts for their attachment.

LLoyd

Reply to
Lloyd E. Sponenburgh

"Robert Swinney" wrote: Lloyd, please elaborate a little on "forging" and "hardy-hole". You are talking about heating the head beyond red and hammering it into a hole (die) of the desired shape - no? ^^^^^^^^^^^^^^^^ The idea is correct, but the words aren't. A "hardy hole" is a square hole in the top of an anvil that can be used to hold things like dies or chisel edges. You would need a properly shaped die to pound the red hot steel into. The trick will be making a die with the proper internal contour to produce the shape you need.

Reply to
Leo Lichtman

But Leo, you need to start with a hardy hole to accommodate the square shank on the carriage bolt. Then you grind/file/drill/chisel the top of the hole to the profile you wish for the head. This particular design is almost trivial. Start with a square hole and countersink it to the head profile - or start with a countersunk round hole, and square up the hole.

LLoyd

Reply to
Lloyd E. Sponenburgh

"forging" and

square hole

contour to

"relatively" easy to make the die if you have an good example of the bolt. Drill a thread sized hole in the stock that you want to make the die from, heat it to a good yellow heat, hammer the bolt head sample through the hole to form a recess of the shape you want.

AWEM

Reply to
Andrew Mawson

"Lloyd E. Sponenburgh" wrote: But Leo, you need to start with a hardy hole to accommodate the square shank on the carriage bolt. Then you grind/file/drill/chisel the top of the hole to the profile you wish for the head. (clip) ^^^^^^^^^^^^^^^^^ Jim made it clear that he understood the process you were describing, but that the meaning of "hardy hole" was new to him. To my mind, a hardy hole is a square hole in the top of an anvil. It is a standard square shape that is intended to have dies or chisels dropped into it. I don't think one would want to modify a hardy hole for a particular job. This is what I was trying to clarify.

Reply to
Leo Lichtman

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