POTD- PROJECT OF THE DAY: What Did You Make In Your Shop Today?

[woodchucker]

What solder alloy did you use? There are silver solders = brazing, and silver solders = electronics soldering. I've used both for mechanical purposes. One is significantly hotter and stronger than the other.

Harris
Stay Brite S-167-2

 

[mmcmdl]

LOL Jeff ! My only experience with silver solder was when I worked at a mold shop . I was trying to build up the stripper pins . I had solder everywhere other than where it was supposed to be .

 

[tq60]

when you say switch, what are you talking about?
2000amp is a huge amount of current.

A cell switch for large area.

Running current 1100 amps at 54 VDC, I think the plant was 10k Amp hours or so.

We had a commercial power fail where the 1.5 MW generator failed, took a while for the plant to get charged back up.

Sent from my SM-G781V using Tapatalk

 

[finsruskw]

You selling on OCC ? Haven't visited lately .

I have listed several items on there in the past.
Little to no results, guess I'm too high priced, Huh??

 

[dkemppai]

Harris
Stay Brite S-167-2

Ahhh. Took a while to figure out. The S-167-2 is the heat number. It looks like the Stay Brite alloy is Sn96Ag4. Standard lead free tin-silver almost eutectic mix (Full eutectic mix is more rare - Sn96.3Ag3.7). Also very similar to Sn95Ag5, which would be just slightly tougher (95-5 is ~10000 psi, vs 96-4 at ~6000psi or similar IIRC).

These are electronics solders, not the high temp brazing silver solders. They melt at 221C. No need to heat anything up red to use these. For steel/carbide use an acid flux (which is what I think the bottle is...).

The 96-4 is nearly eutectic and will solidify at the same temp, so you can play with it until it almost freezes up. Others have a 'mushy' stage as they cool, and you don't want to move when it starts cooling.

If you do more of this, you might want to look into the silver brazing type solders. You can do some of these with just a propane torch. The carbide and mild steel can take the red heat.

 

[woodchucker]

Ahhh. Took a while to figure out. The S-167-2 is the heat number. It looks like the Stay Brite alloy is Sn96Ag4. Standard lead free tin-silver almost eutectic mix (Full eutectic mix is more rare - Sn96.3Ag3.7). Also very similar to Sn95Ag5, which would be just slightly tougher (95-5 is ~10000 psi, vs 96-4 at ~6000psi or similar IIRC).

These are electronics solders, not the high temp brazing silver solders. They melt at 221C. No need to heat anything up red to use these. For steel/carbide use an acid flux (which is what I think the bottle is...).

The 96-4 is nearly eutectic and will solidify at the same temp, so you can play with it until it almost freezes up. Others have a 'mushy' stage as they cool, and you don't want to move when it starts cooling.

If you do more of this, you might want to look into the silver brazing type solders. You can do some of these with just a propane torch. The carbide and mild steel can take the red heat.

well the goal was to see if what I had would work. I didn't consider these electronic solders. What would they be used for? not rosin cored? I don't think the flux is acid.. I used to think that. But something I read at Harris kind of changed that for me a while back. I don't remember what it was.

edit: and I never got it red, just hot

edit2: it is an acid. zinc chloride. a ph of 1

 

[mmcmdl]

Went up to the dump and unloaded a bunch of steel and plastic . Eh , maybe a few hundred lbs . Of course , that space had to be filled by me before someone else filled it . I got my 3' x 8' 80/20 table base in the garage now . The top is 3/4" aluminum jig plate and heavy as heck . That will go in later on when the sun goes down a bit . More progress made !

 

[woodchucker]

Went up to the dump and unloaded a bunch of steel and plastic . Eh , maybe a few hundred lbs . Of course , that space had to be filled by me before someone else filled it . I got my 3' x 8' 80/20 table base in the garage now . The top is 3/4" aluminum jig plate and heavy as heck . That will go in later on when the sun goes down a bit . More progress made !

pics of that table base and TOP while you have it out in the open.

 

[mmcmdl]

pics of that table base and TOP while you have it out in the open.

I knew it ! I just knew you were going to comment Jeff ! I know , believe me , no pics , it didn't happen .

 

[mmcmdl]

I use the loader to move the top . Still a PITA to get the top onto the base though . Still have a ship pot full of 80/20 left for more tables .