What would you use to sand, reduce the thickness of a flat rubber washer?
Sandpaper? Most likely I only need to remove 1/64th" at most 1/32". I have
plenty of washer so trial and error will get the right thickness sooner
rather than later.
Experience with this group dictates that I must explain the why. :)
We have a transfer valve on the garden tub. The shower head broke. The part
is obsolete, replacements from Delta are made differently and because of the
deck mount would not be a good choice. Changing out the deck mount would be
a major project. I bought a hand held shower unit at Lowes, but the thread
run length is slightly different and the old washer was bad. The OEM washer
is also obsolete and did not even have a part number. I substituted a
regular flat washer but it is slightly too thick resulting in the angle of
the dangle being wrong.
Please come visit http://www.househomerepair.com
I don't think rubber sands very well,it would be better to shave it down
somehow. maybe a disposable razor? I'd suggest a hobby plane,but you'd need
a scary-sharp blade.
WRT sanding,maybe one of those oscillating multitools(Fein,HF,etc.) could
sand it down. But the remaining surface will be rough,not smooth.
Probably have better luck going to larger supply house and finding one
of right thickness or make one of one or more layers of gasket material
to get the proper thickness.
Or, for just a tiny bit, I'd probably try squishing one in a vice to see
if could get it to hold some compression just enough to make it work.
Abrading rubber is tough and likely to leave a surface that won't seal
even if get it done. But as for how to try it, I'd give holding it
against the side of the grinder wheel for a while and see how that
works...might have to double-sticky tape it to a small block or
something to kept it flat and give something to hold on to.
On Thursday, July 5, 2012 11:21:53 AM UTC-4, DerbyDad03 wrote:
1. Double-edge razor blade.
2. Metal shims the same thickness as the desired end result on each side of the
washer to guide the blade.
3. Two really steady hands.
My fingertips started bleeding just at the thought of doing this.
I sand down rubber corks to use as tips in my cane, no reason why you can't
thin down a washer. If it were me, I would...
1. stick washer to something rigid with double sided tape
2. sand away
Coarse paper works better than fine, rasps work well too.
The thoughts about cooling/freezing have merit.
Most rubber parts will sand just fine on your small bench grinder.
Might take clever fixturing, but can be done.
Better to head to your auto parts store and buy a sheet of rubber
gasket material of the right thickness and a gasket punch set. Neither
of these is a $$ deal breaker and what you buy will be useful for
other projects/repairs. BTDT.
You can easily make your own punches from pieces of tubing close to
right size, like EMT, for example. Just sharpen the edges like the
gasket punch and be sure to use some end grain wood as backup for the
punch so as not to destroy the sharp edge.
Check McMaster.com, they have rubber washers in neoprene and EPDM in
various sizes and 0.062", 0.093" and 0.125" thicknesses and should have
rubber sheet stock in many more thicknesses you can cut a washer from.
Actually there were several good suggestions and I will report back what I
try and what works. I won't be playing with razor blades but thanks anyway.
Just to clear up any misunderstanding; this was a lucky diameter on a
standard faucet washer and I think they only come in one thickness.
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