Brazing rods/flux

[Kram]

How are you planning to shape the built up tooth?

Tig with sillicon bronze may work, easy enough to do Id say, lots of members have tig.

Best option perhaps, have a new gear cut. A few members on here seem to have the kit and know how to do it.

 

[GraemeVW]

How are you planning to shape the built up tooth?

Tig with sillicon bronze may work, easy enough to do Id say, lots of members have tig.

Best option perhaps, have a new gear cut. A few members on here seem to have the kit and know how to do it.

I'll either file it, or someone offered to cut it properly.
Shaping the tooth isn't high on my list of concerns.

 

[MattF]

An oft used method for rebuilding gear teeth is to drill & insert, vertically, several steel pins in the tooth, then use the filler. Gives the filler something to bond to.

 

[RichardM]

If you are going to try to braze it with map you will need some radiants around it to retain the heat.

 

[GraemeVW]

If you are going to try to braze it with map you will need some radiants around it to retain the heat.

Yep. I have a wood burner in the workshop. Plan is to pre heat it as much as I can with that, then work on it encased in 50mm of vermiculite board.
I'll use the wood burner to keep the cool down controlled too.

I've had large ish bolts glowing hot like this when I wanted to undo the heat treatment. It managed it quite easily.
The gear will be pushing what I can do though, but I'm going to at least try. All ill waste is some time and some gas.

 

[smashweld]

Tig with sillicon bronze may work, easy enough to do Id say, lots of members have tig.

I used these https://www.amazon.co.uk/gp/product/B083PX5LJM/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 and filed/grinder to shape, maybe only 5 hours total running since but fine so far

 

[GraemeVW]

I used these https://www.amazon.co.uk/gp/product/B083PX5LJM/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 and filed/grinder to shape, maybe only 5 hours total running since but fine so far
View attachment 399601

Exactly the ones I've ordered

 

[smashweld]

incase any confusion that was with TIG...

 

[GraemeVW]

incase any confusion that was with TIG...

That just jogged my memory. Those were listed as tig or gas, but at 1000° melting point.
I thought that was too high so thought I'd better go check which ones I actually did order!
Seems I ordered these as they are 800° or thereabouts.