Brass vs Bronze for heat sink backing?

[Susquatch]

Don't lick it, and you should be fine.

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Are we talking about bronze, the part in the lathe while it's spinning, or the bike seat here.......

 

[140mower]

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Are we talking about bronze, the part in the lathe while it's spinning, or the bike seat here.......

Take your pick...... same level of brain cells for either.

 

[trevj]

Don't lick it, and you should be fine.

Yep. That's about it.

Standard rules as apply to most shop work. Wash your hands, keep your fingers out of various orifices, don't smoke.

I dealt with a LOT of Beryllium Copper alloys, and had to deal with new supervisor, after new supervisor, that lost their minds over "Beryllium" without ever reading the actual MSDS sheet on the stuff.
The 'rules' for Be-Cu alloys were essentially, No smoke, No sparks, No food nearby. So, cleanliness, to avoing ingestion, and no welding or grinding, or similar hotwork. Pretty easy terms...

Your biggest hazard is dropping it on your foot!

 

[Dan Dubeau]

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Are we talking about bronze, the part in the lathe while it's spinning, or the bike seat here.......

All of the above. There are very few situations where licking it is the best way forward.

 

[Susquatch]

All of the above. There are very few situations where licking it is the best way forward.

I wanna watch you convince my dog of that.

 

[Dan Dubeau]

Yep. That's about it.

Standard rules as apply to most shop work. Wash your hands, keep your fingers out of various orifices, don't smoke.

I dealt with a LOT of Beryllium Copper alloys, and had to deal with new supervisor, after new supervisor, that lost their minds over "Beryllium" without ever reading the actual MSDS sheet on the stuff.
The 'rules' for Be-Cu alloys were essentially, No smoke, No sparks, No food nearby. So, cleanliness, to avoing ingestion, and no welding or grinding, or similar hotwork. Pretty easy terms...

Your biggest hazard is dropping it on your foot!

No mucus membrane exchanges. Don't inhale fumes, don't eat with dirty contaminated hands, wear PPE. Should be standard practice, but I know what chemcool tastes like, so.....

It's a shame about the big stigma behind BeCu. Ping used to make some great golf clubs from it. I've always wanted a nice set of Eye 2 BeCu irons. Old tech now, but very nostalgic.

 

[Dan Dubeau]

I wanna watch you convince my dog of that.

When your only tool is a hammer.....

 

[Proxule]

I wanna watch you

SNIP

 

[Xyphota]

I’ve completed the 2 sleeves I need for the upcoming bike. Thanks for the material suggestions everyone!

 

[PeterT]

Very nice. Those look remarkably similar to expanding sleeve arbors, except those are a single taper & steel of course.

 

[Degen]

Too further influence you choice of material, google cooper welding spoon. I bought one years ago (i dud the research why they are still desired) when I found out about them and they where on sale at HF.

The long and short is that if all materials cooper sticks the least, has a high melting temp and is an excellent heat transfer medium.

While it has some challenges on machining a little caution and effort does two things. Gets a good finish and more importantly improves your skill as a machinist.

So......