Boiler stays

Boiler stays

This topic has 6 replies, 4 voices, and was last updated 1 May 2010 at 17:26 by Speedy Builder5.

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30 April 2010 at 18:20 #51283
Speedy Builder5
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@speedybuilder5
When rivets are used, are they just silver soldered in or does the small end have to be set before silver soldering.

Why are threaded stays used instead of rivets, or studding used ?
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30 April 2010 at 18:20 #5051
Speedy Builder5
Participant
@speedybuilder5
Rivets, studding or screwed stays
30 April 2010 at 19:50 #51285
macmarch
Participant
@macmarch
You are using the rivets and stays to prevent the flat sections of the boiler from bowing and blowing out. So, yes set the rivets. Do not, however, rely on rivets to hold against pressure to compensate for bad fiiting of the plates. Rivets should be used to hold while siver soldering. There is no gap between the plates so silver solder cannot flow bvetween them. The idea of using screwed stays is so that there is no possibility of them popping out. They also hold the plates rigid to each other.

Ray
30 April 2010 at 19:59 #51286
JasonB
Moderator
@jasonb
You should just be able to poke the rivits through the plates from inside the firebox, silversolder them and trim off any excess. Any attempt to set then will just push the firebox and wrapper together. You can bend them slightly so they don’t fall out.

Jason

Edited By JasonB on 30/04/2010 20:15:03
1 May 2010 at 09:36 #51296
macmarch
Participant
@macmarch
Jason, That’s what I meant to say. Don’t set a rivet when there is a gap; only to hold parts together for SS.

Ray

Edited By macmarch on 01/05/2010 09:37:00
1 May 2010 at 10:39 #51303
KWIL
Participant
@kwil
Do not forget to lightly countersink the plate around the rivet stem to allow a ring of SS to form.
1 May 2010 at 17:26 #51313
Speedy Builder5
Participant
@speedybuilder5
Thanks for all that info – makes it a bit clearer – Bob
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