This is the first post I have made of my build, started over a year ago but with my wife in hospital on two occasions during the year it took a long time to get restarted on the build. Have read and taken in a lot of ideas from the general discussion forum. There appears to be a lot of problems in cutting the cannon ports I went to our general hardware store and asked a very friendly hardware man if there were any cutting discs that would do the job. He looked at the instruction build and measurement and suggested that a LINBIDE disc may do the job. I bought a pack of discs, 5 in the pack, these are diamond discs being 19mm in diameter and by not cutting all the way through may do the job.This proved to be correct. I drew all my port lines and cut right up to the lines and this cut through the 12 x 13 mm ports in the centre allowing to get a hobby knife in to start cutting. This made the job very neat and much quicker, a little filling and a good result.Hope this helps some people with their cannon ports.

Greg Francis. New Zealand.

Welcome to the forum Greg and looking forward to seeing your progress and well done on cutting out the gunports

Rgd Martyn