Boiler stays

[Speedy Builder5Participant @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 ?

[Speedy Builder5Participant @speedybuilder5]

Rivets, studding or screwed stays

[macmarchParticipant @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

[JasonBModerator @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

[macmarchParticipant @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

[KWILParticipant @kwil]

Do not forget to lightly countersink the plate around the rivet stem to allow a ring of SS to form.

[Speedy Builder5Participant @speedybuilder5]

Thanks for all that info – makes it a bit clearer – Bob

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