[TheForge] Making power hammers

[lama]

Steve, I have been using my Kinyon style hammer with bolt on dies for
years and have never had trouble with the dies coming loose. The other
good point about bolt on dies is that you can change them in just a
minute or two. http://magichammer.freeservers.com/
I used bronze on the ram ways of my 60 / 70 # hammer as suggested by
Kinyon. I am building a much bigger 300# hammer and plan to use no
buffer in the ram ways. Having had two 250# Moloch hammers and a
50# Little Giant that all ran metal to metal in the ram ways, I am sure that
it will work fine. A little heavy oil once-in-a-while will do the trick.
dave m.

----- Original Message -----
From: "Steve Smith" <sos@alum.mit.edu>
To: "theforge" <theforge@mailman.qth.net>
Sent: Friday, November 29, 2002 5:59 PM
Subject: [TheForge] Making power hammers


> I'm starting on building a Krause/Nazel type air hammer, and want to
> start some discussion of various issues, most of which will be common to
> all power hammers.
>
> Die holding
> I'd like to avoid using a tapered wedge. I've seen several places people
> using cap screws. Does anyone have firsthand experience with this
> approach? I'm wondering if spring washers will be sufficient to keep the
> screws from loosening, or if the situation is hopeless.
>
> Another possibility for the bottom die would be a tapered socket. I've
> never heard of someone using this, but it seems like it would work if
> the die is heavy enough to avoid bouncing.
>
> Ram slide lubrication
> Are people pleased with their results using UHMW plastic on the ram ways?
>
> I guess that will do for starters.
>
> Steve Smith
>