My wife just recieved a Pur water filter system for Christmas, this requires drilling a hole in our porcelin kitchen sink to install the sink fixture.
How do I start and drill the hole? What kind of cutter do I use? are bi-metal hole-saws ok on porcelin, what can I use to keep the porcelin from cracking? Is there a compound or cooling oil that is best for thins kind of job? Is there a web link or an article online I can research?
Replies
can you drill the counter?
i used a masonry bit last time i had to drill porcelean. You might also use a glass bit. have a couple of spares....porcelean is HARD.
Diamond edged core bit.
T
Do not try this at home!
I am a trained professional!
With slow speed and light pressure. Have DW mist it with a spray bottle of water.
Another alternative is to cut the hole with a variable speed drill, a brass or copper tube, loose silicon carbide abrasive, and water. It's slow, but you get a very smooth hole and no risk of chipping anything. You might have to rig some kind of fixture to hold the tube in place until you get a good groove established.
16 years ago, you could buy loose abrasives from MDC Industries in Philadelphia. I imagine a web search would turn up more contemporary sources.
This also works for drilling glass, granite, hardened steel, etc.
But it is slow.
OK, thanks to all for the advice. I'm going to cut the hole today. BTW, it's a 1-1/4" hole. For those pros who might be interested, here's a link to a site that sells a hole saw specifically for porcelain. Looks expensive!
http://www.gamurdock.com/reltonkit.htm
jg
Well, 1-1/4" probably eliminates the brass tube idea. What did you decide to use?
I had a friend who loaed me a 7/8" relton porcelian hole saw. (see the link I posted above.) Unfortunately the diameter was too small, and he didn't have any other sizes. So I haven't done it yet. I think I'm just going to hire a pro who has the correct size relton cutter to do the job. I can install the filter system once the hole is cut. Thanks for the advice though.