Maggie’s The Welding and Metalworking Thread

#1,951
Calling all guys who run CNC machines, I need some advice: I need to re-caulk some joints inside my mills as the coolant has eaten up what is in there. I have used RTV and a number of different sealants over the years. It will last about a year and then degrades to failure. Im currently using Percool 5440 as coolant.


Any advice will be greatly appreciated.
 
#1,952
lariat said:
Calling all guys who run CNC machines, I need some advice: I need to re-caulk some joints inside my mills as the coolant has eaten up what is in there. I have used RTV and a number of different sealants over the years. It will last about a year and then degrades to failure. Im currently using Percool 5440 as coolant.


Any advice will be greatly appreciated.
Click to expand...
Oil based coolant or water?

One idea is Sikaflex, building supply store should have it.

Or else the black urethane stuff that they glue windshields in with. Auto parts store should have it.
 
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#1,954
lariat said:
Oil, semi-synthetic.
Click to expand...
Another we use when reassembling machines that use straight synthetic oil coolant is Stucarit 309.
Or sometimes called Dicht Gel.

But that’s more for a layer between two parts, like a non hardening gasket.

There was a German brand of caulk also but I’ll have to send an email to try and figure out what it was.
 
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#1,956
Needed a spider for my SBL 10L so made this the other day.

spider1.JPG
Spider2.JPG
spider4.JPG

spider3.JPG
 
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