Should Domino motor housing be rubbing the baseplate?

[Iwood75]

I noticed while changing bits in my new (few months old) Domino 500, that the motor housing has slightly abraded the inside of the baseplate. It appears to be rubbing while oscillating and plunging. Is this normal? Should it be contacting the baseplate at all? Anyone else experiencing this condition? Thanks for checking and letting me know if I should be worrying about this.  Joel

 

[davee]

My motor housing only contacts the fence at the sliding rails.  There is no contact while oscillating or plunging.  I suspect something is out of alignment on your unit.  The positive is that Festool is very quick at turning around units that are sent in for repair.

 

[Iwood75]

Maybe I didn't make it clear. The rubbing is on the INSIDE surface of the baseplate. The abrasion can only be seen when the fence body is removed from the motor housing, as when you've slid them apart to change the mortising bit.

 

[Alan m]

i dont think i have seen any signs on my domino.
i would ring festool  and see what they have to say. a moving or spining part coming in contact with something its not suposed to is never good

 

[Iwood75]

I was really hoping that some of you would take a moment to inspect the underside of your baseplate and let me know if you see any signs of rubbing. Thanks.

 

[Ken Nagrod]

I don't see any on mine.  I have an original model.

 

[Rick Christopherson]

The underside of the baseplate is a thin sheet of stainless steel. This is only a few thousands of an inch below the spindle. You may have bent the sheet. Another simple situation, since you can't see that they rub, is that the marks you are observing are just from trapped sawdust over time.

 

[Iwood75]

Thanks guys for your observations and comments.

Rick, my baseplate appears to be perfectly flat. Any way I can ascertain if the marks are, in fact, from trapped sawdust? They appear more like the area has been "polished" than scraped. The scuffs are not deep enough to feel.

 

[RONWEN]

I checked my pin fence -- there are no "swirl' marks on the inside however checking with a feeler gauge there is only .017" clearance between the oscillating spindle housing and the stainless pan.  The pan could easily get distorted to where it would rub if the machine happened to be set down a little hard on a wrench or something similar.  It would also be just as easy to straighten the stainless pan, probably best by Festool service.

 

[Rick Christopherson]

Yes, if it is more like a polish, then it is very likely that it is just from trapped dust. If it was metal-to-metal contact, then you would expect scratches, not a smooth polish.

 

[Ken Nagrod]

I spoke to Lester at Festool recently.  He told me the same thing Rick mentioned.  There's around 10 thousandths of an inch clearance and trapped sawdust will rub and polish a small area.