TRS Seat Question

[bh973]

I have noticed almost all the screws on my piano hing for the seat are rusting. is the fix just replace the screws?

Any tips on the rust removal?

Thanks in advance!

[jh141]

New screws, Magic Eraser. If stain is bad use rustoff. Polish will clean the ss hing Been there done that.

[SCFD rtrd.]

I've had the same problem and did some reading on preventing rusting screws. From my research, there are two main reasons for rust on stainless hardware.

1. The screw driver tip plays a roll in transferring carbon to the head of the screw and starts the rust there. You can buy screw driver tips that are coated or made of Beryllium and they will not transfer carbon to the screws.

2. Water is the second culprit. Not surface water but water entering the area between the screw and fibergl*** causes rust. In your case, you'll have to remove the rust on the fibergl*** with some rust removing product, then use a small amount of quality caulking to bed the screws. The caulking will prevent water from sitting between the screw and the fibergl***. "Boat-Life" makes a very good clear caulking for this type of project.

[Dawgfan]

FSR......removes rust stains really well....

http://www.davisnet.com/marine/products/list_marine.asp?grp=m17-2

[keyphish]

I had the same issue in my 24TRS.  I cleaned them once using a rust remover from West Marine and a toothbrush.  Since then I prop my seats open against the back rest (45 angle) when not in use so the moisture doesnt build up ... has not re-rusted since.

[PFlinesider]

I don't see anyone mentioning the wonders of  "OSPHO" which you can buy in quarts or  gallons at ACE and other places.

 I always take brand new SS screws or hardware and soak overnight in the stuff.  It is supposed to "passivate" the SS surface and greatly reduces rusting.  Read about it on Net.  Could take piano hnge off and soak or rub it also.

 

 

[SCFD rtrd.]

Good stuff. I learned something new today, thanks. Can you supply a link that talks about passivation?

[Dawgfan]

http://wine.appstate.edu/sites/wine.appstate.edu/files/Diversey_PassivationofStainlessSteel.pdf

[SCFD rtrd.]

Thanks Dawgfan, but the link doesn't mention Ospho. Can't seem to find anything about Ospho and passivation.

[fishbum321]

the best process for passivating 300 series stainless is a nitric acid solution with a distilled water rinse this will remove all the surface iron.  which causes the rust something as simple as a stel screwdriver can start the rust back.  I would have to look up the concentration I think it was 0.1 molar.  one of the sites I believe said 20%.  I used to passivate spacecraft hardware after rework/machining.

[THE OUTLAW]

All stainless rusts .

Ther are differant grades of s/s.

Most hardware will be made of a lesser grade .

Usually 304.

The least resistant grade is 316L. ( low carbon)

You can get 316L S/S hardware and slow the rusting process considerably.

Just a thought .