Member postings for A D 1

Hi Bill,

I was thinking the flux might be causing problems.

As for brass brazing- no I have no objection to using silver solder-which I might end up doing yet.

I was mainly making long drill bits with silver steel and for that purpose bought some brass rods believing them to be stronger and cheaper than silver, and it worked on those. So I suppose my reason for brass brazing on this occasion is really because that's what I've got at the minute. And since it failed I want to know whether the torch is at/past its limit with this size of steel.

Hi IanT

Looking at what you have brazed there I think the torch should definitely be able for what I was doing.

When you say the work should be properly shielded - what would you suggest using? I'm using fire bricks to insulate for now but I'm not sure how effective these are.

I will try again once I get the correct flux.

Thanks both for your advice!

Thanks for the quick reply.

Do you have any experience brass brazing with propane only? I am wondering if the Sievert would give better results, or would an oxy- or air-gas torch be needed for that size of steel?

Thanks

Hello everyone,

I know I am kind of resurrecting an old thread here, sorry in advance if that's the wrong approach.

I recently got the Bullfinch Brazing torch, and I would appreciate your input with a problem I am having:

I am trying to braze some 8mm threaded bar to a section of 30x30x3mm mild steel

The steel is drilled 8mm and the threaded bar is sitting in hole. The steel is set on, and partially surrounded with fire bricks, but I am struggling badly to reach a temperature where the brass brazing rod runs into the joint.

Is the steel section too big for this torch?

Or would it be a flux issue? (I ordered brass brazing flux, but the company sent me silver solder flux-I am temporarily using this)

The steel gets red hot easily enough, but the rod doesn't melt (or at least certainly doesn't flow) by touching the steel - only when the flame is directly applied to it.

Would appreciate your thought,

Thanks,

Á D

Thanks for the replies.

Yes I tried RDG and they only seem to do the travelling steadies now. and I think your right- the standard myford one fits only relatively small diameter.

On ebay I see one which has some base welded on-which I think makes it useless for a ml7. One from myford at 144£ and a non-model specific one, which might actually suit

Thanks

Hello All,

I am new to this site, so I appreciate the knowledge and wisdom you are sharing. I am looking for a fixed steady for a myford ML7. Myford seem to have them for 111£, while chronos have something very similar looking for around 40£ (unfortunately out of stock). Then I came across one at Hemingway kits for around 41£. Does anyone have feedback on the Hemingway steady, or (being kit suppliers) if it requires a lot of finishing work ? or any pointers on other suitable fixed steady ? Thanks in advance for any help!