Forgot to Mention – Drilling the drain holes!

The tale of Bloggin’ the Blog continued…

I skipped a step in the last post – The connector holes are drilled and tapped blind – NOT into the cylinder.   These blind holes are then drilled through into the cylinder at 45degrees into the cylinder to get as close to the cylinder edge as possible.  I used a 2mm drill,  but 1.5mm would probably be better.   The connector hole is c5.5mm dia. x 5.5mm deep, so it’s not possible to do more than 45 degrees.

In the picture you can see I’ve aligned the cylinder with a piece of flat material against the port face.