Plumbing, A few new Questions

[GreenSpottedPuffer]

Originally Posted by mark

People were buying drill bits on eBay and I've seen the diamond dremel bits at Princess Auto.

Use water for cooling and just make the dam up with putty, your kids Playdough etc

Yeah I just found some on ebay for quite cheap. May not last long but I only need to drill 4 holes in relatively thin glass, so I think they may do the trick.

[GreenSpottedPuffer]

What size hole is generally needed for a 1.5" bulkhead? I thought 2" but does it depend on the bulkhead itself? Or is there a standard?