[TheForge] Making power hammers

Fri Nov 29 20:07:01 2002

How are your screws holding the die--is the die welded to a flat plate, 
screws going down into the anvil?

I've used UHMW on a treadle hammer, just wanted some reassurance about 
using it in a more demanding application.

Thanks,
Steve

Shannell Sugrue wrote:
> I use cap screws with lock washers, they never come undone, then when I
> forget or lose the washers they also never come undone :)
> I used UHMW and its great its all Ive ever used so Ive nothing to compare
> but it is designed to handle this type of use.
> 
> ----- Original Message -----
> From: "Steve Smith" <[email protected]>
> To: "theforge" <[email protected]>
> Sent: 29 November, 2002 3:59 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
>>
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>>
> 
> 
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