Coleman Sink question

[tlhdoc]

Does anyone know if the sinks in a 1999 Coleman Grand Tour camper are 2 or 3 holes?  Part two of my question is can you drill a 3rd hole in a camper sink and not mess up the sink and if so what would be the best way to do it?

[mike4947]

According to the parts list the sink diagram does not show;  but the water system diagram shows only two faucet connections so I would say two holes only.

[tlhdoc]

Thanks Mike.  So how do you go about drilling a hold in an "enamel" sink, with out messing up the sink?

[PM3579]

I would think diamond or some other type of abrasive hole saw to go through the enamel, followed by a bi-metal hole saw to go through the steel. The enamel bit should be a little larger so that the bi-metal doesn't chip the edge of the enamel. Pad and tape the entire area so that a slip of the abrasive bit doesn't scratch anything. Also use a very slow speed for the first cut and use some type of lube - coolant on both cuts.Thats my thoughts lets see what some of the super modders have to say. :usflag:

[tlhdoc]

I already did the drilling.  I taped the sink with clear duct tape then drilled a pilot hole for each hole.  I then drilled the bigger holes, which over laped.  Then I used a dremel tool to smooth out the edges.  It worked out very well.