I have a Bosch PSS230 orbital sander (1990's vintage I think) which has served me very well until yesterday when it made a nasty noise and some crud dropped out of the bottom. Having had a look at it it looks like the 'crud' was the remnants of some sort of cement/rubber flexible force transfer system between the spindle and the footplate (excuse me if these terms are wrong).

Just wondering if anyone here has had a similar problem, and whether there is a suitable material (silicone, acrylic...) with which I can rebuild it?

Thanks, Dan

red arrow shows where the 'crud' came from

  • A photo of the crud and the general condition of the bottom of the sander would work miracles clarifying your text. :-) – wallyk Aug 8 '16 at 17:54
  • Thanks wallyk, have added a photo. The 'crud' itself has departed, but it was in the form of whitish-grey powdery lumps - may have looked a bit different 20 years ago. – Dan_7378439012 Aug 8 '16 at 19:02


Bosch may have a answer.

i have had lots of lock using PERMATEX Right Stuff. Silicone based, fast drying, strong and dependable.

  • Thanks KENG, I suppose that the substance needs to have a suitable modulus to damp out the oscillations at the right level. Is Permatex quite a stiff sort of substance? Have you used it for this specific purpose? – Dan_7378439012 Aug 9 '16 at 8:54

I've sorted this out now, and in case I mislead anyone else with this, there was NOT a broken down flexible linkage in there, it was just compacted sawdust as some have suggested. The problem was just a sticky bearing which I've now freed up and all is good.

  • If this is the correct answer, you can select it by clicking the check mark (even though it was your question). – Daniel Griscom Dec 30 '16 at 18:23

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