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[peekama]

Well, I just finished my magma pumping system, and the fort hasn't flooded, so that's good.  But I was surprised to see my floodgates melt.  I used bauxite for the mechanisms so I thought I was safe, but the gates themselves melted.

I thought floodgates didn't melt?

[Lexender]

And you have here an excellent example of how thoughts can't affect the world of DF.

Only constructions (walls, fortifications, floors) and natural walls aren't affected by temperature.

[peekama]

Oh well, at least I know now

[slink]

Just in case you were considering iron pumps for your magma, those come apart.  I ~thought~ *grins*  that since wood pumps would work, iron should also.  Oddly enough, the pump parts were recoverable, even though the peasant (male, single) was reduced to smoke and bones.

[G-Flex]

Why would iron be a bad choice? It's magma-safe.

[Soadreqm]

Are you absolutely sure all parts were indeed made of iron? Because I have had several functioning iron magma pumps. And the melting point of iron is higher than magma temperature.

[Random832]

Well, I just finished my magma pumping system, and the fort hasn't flooded, so that's good.  But I was surprised to see my floodgates melt.  I used bauxite for the mechanisms so I thought I was safe, but the gates themselves melted.

I thought floodgates didn't melt?

Closed floodgates don't melt. But the reason people will tell you the only thing you need bauxite for is the mechanisms is because everything else you might want to have in contact with magma can be made of metal (i.e. your floodgates should be iron)

slink, you should try it again and post a map of the area before you activate the pump so that if it happens again the problem can be figured out - an iron pump should have no problem.

[Core Xii]

Pumps don't melt though on the exit-side, that tile is blocking and unaffected by temperature. It's only from the intake side that a non-magma-safe pump will melt if it comes into contact with magma. (And note, pumping magma from 1 z level down is not being in contact. The pump "teleports" the magma to the other side and doesn't do any temperature checking)

[Random832]

Pumps don't melt though on the exit-side, that tile is blocking and unaffected by temperature. It's only from the intake side that a non-magma-safe pump will melt if it comes into contact with magma.

Right, but an iron pump shouldn't melt regardless, and if it did melt its components should have melted.

Was it dwarf-operated? Could the dwarf getting burned have caused it to deconstruct?

[Captain Xenon]

a magma pump has a iron or steel corkscrew and pipe, a bauxite mechanism... and a bauxite block. if that block isnt magma safe then the whole thing fails.

[Duke 2.0]

a magma pump has a iron or steel corkscrew and pipe, a bauxite mechanism... and a bauxite block. if that block isnt magma safe then the whole thing fails.

But only if the whole thing is submerged. You can have the block made of coal and only have magma touching the output and the thing won't melt. If the pump is submerged, then is when you need all materials to be magma-safe.

[Random832]

a magma pump has a iron or steel corkscrew and pipe, a bauxite mechanism... and a bauxite block. if that block isnt magma safe then the whole thing fails.

Pumps don't take mechanisms. I've heard that glass blocks are magma-safe.

[Magua]

Glass is not magma safe.

But iron is.  My magma safe pumps use one iron corkscrew, one iron pipe, and one iron block.

My magma safe bridges (less mechanisms than floodgates) use one iron block and one adamantine mechanism (no %^@#ing bauxite)

[Dogman]

The output side of the pump counts as a wall and is therefor magma-proof. Unless your pump is totally submerged it's safe.

[Doppel]

The components for a screw pump are
-pipe (can be made out of anything, unless the construction is submerged into magma, then it needs to be made out of magma safe materials)
-block (same as above)
-corkscrew (always needs to be made out of magma safe materials)

Also, make sure the magma doesn't come into contact with a gear, unless its again made out of magma safe materials (only bauxite)

Can someone verify this all to be correct?