Cerrosafe

[Murph1090]

I've used it for a few other uses as well - some of them well off the beaten track!

As a locksmith, I have a key casting kit, lets me take an impression of the key to form a mould and make a exact copy of said key! Right out of the CIA playbook, eh?

I've also cast nuts and bolts from it, using two-part silicone to make a mould, making fasteners that would predictably fail at certain temps. Worked great!

Murph1090

[suther51]

Have heard of using it to mould around high precision parts as a sacrificial clamping surface so as to not cause damage from clamping. My old boss used some to replicate a British car club(?) Mediation for his Austin 10.
Eric

[mklotz]

Have heard of using it to mould around high precision parts as a sacrificial clamping surface so as to not cause damage from clamping. My old boss used some to replicate a British car club(?) Mediation for his Austin 10.
Eric

Yes, I've used it for clamping myself. It's especially useful for clamping castings with no reference surface so the initial surface can be machined

"Mediation"? Should that be medallion?

[suther51]

Yes, sorry, a jumble of electrons always trying to out-guess the human.
Eric

[mklotz]

Yes, sorry, a jumble of electrons always trying to out-guess the human.
Eric

Until auto-correctors become fully conscious to the point of understanding the material to which they are applied, they are perfectly useless. There is no electronic substitute for proof-reading.

[Toolmaker51]

Until auto-correctors become fully conscious to the point of understanding the material to which they are applied, they are perfectly useless. There is no electronic substitute for proof-reading.

I run into auto-correct so frequently, no matter how much I add to my dictionary. Real question is how did these products get made ignorant of processes guaranteed of use to produce them?

[Toolmaker51]

I double clicked in error. Pretty sure nobody want to read my stuff twice. Instead, how was your day?
We had machinery movers in shop today, 6 of them for a three man job...found work away from where they were. They braced horizontal mill by wood blocks under the sliding ram to lift. I noticed fork blades seemed a little too far apart, right before the main 8" x 8" splintered, dropping the mill about a foot. Bad enough but first offense, they hadn't blocked the knee to unload the elevating screw.

[owen moore]

Thanks Toolmaker51 for your info on your sulfur/graphite mix. Never heard of that one. First time I ever used a Cerro product; I accidentally used Cerrobend instead of Cerrosafe to do a chamber cast on a rifle. BAD IDEA! It stuck, and I had to knock it out with a cleaning rod and a wooden dowell. I didn't think I would ever get it out. They are good products for the correct applications. I understand that there is a product now that is a plastic resin of some sort for bending thin wall tubing that is much cheaper than Cerrobend. They also have a product called Cerrolow That is an alloy of Indium that melts at 117 degrees f. Interestingly enough, Indium is also the metal that "screams" under stress (bending).

[Toolmaker51]

One supplier of resin mixtures is "Flex-Bar", well known for their inspection tools.
WARNING. Have spouse retain your debit card before entering their site IYKWIM. A ponderous mass of wondrous products. With an intro byline of Unique Inspection, Measurement & Machine Safety Systems , they say 'Unique' ain't whistlin Dixie.

Unique Inspection, Measurement & Machine Safety Systems | Flexbar Machine Corporation - Flexbar

Be it known I rarely mention corporations by name or expound their virtues; when I do, experience says OK.
Never been offered compensation. Of course, those I respect most are long out of business.....

I've not bent much tubing without a mandrel or bending apparatus. But fine sand sealed in thin wall worked not so bad.

[DIYSwede]

Sulphur-Carbon casting recipe from NBS Handbook 1934

Melting point of sulphur is (as you all already know):
115 °C or 240 °F