Airspring Solonoid inner Shaft sanding flat

I have splashed out $86 on a drill press on special.
Taken the plunger from the diaphragm solenoid put in the drill and gently run it up and down onto a well soaked fine carborundum oil stone. Once the indent was nearly gone I then went to 1500 wet and dry for the final bit. ( could not get 2000)
As advised this seems to work well, is controllable with the assurance that the final surface will be smooth and relatively flat. I am happy with the result so thanks for the advise, I cant believe I missed the previous posts about doing this.
I did try to remove the rubber but no way, its definitely anchored.
I could take some pics when I do all the others if anyone is interested

Quote:

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Originally Posted by wayneg

I have splashed out $86 on a drill press on special.
Taken the plunger from the diaphragm solenoid put in the drill and gently run it up and down onto a well soaked fine carborundum oil stone. Once the indent was nearly gone I then went to 1500 wet and dry for the final bit. ( could not get 2000)
As advised this seems to work well, is controllable with the assurance that the final surface will be relatively flat. I am happy with the result so thanks for the advise, I cant believe I missed the previous posts about doing this.
I did try to remove the rubber but no way, its definitely anchored.
I could take some pics when I do all the others if anyone is interested

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Wow, 2000W/D you must have patience:D:D

Rob

Reversed the rubber tablet/pill today on two solenoid valves. Boy, they're not easy to get out. But by gluing them back proud, you can sand them back flat. Not sure if they'll seal any better. The rebuilt valve block I have installed is pretty good as is at present.

Quote:

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Originally Posted by davidsonsm

The rebuilt valve block I have installed is pretty good as is at present.

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Yeh, thats why my rebuilt block is in bubble wrap and not on the car.:D

Rob