Blocked Cylinder casting port

[wsf]

I wonder if you can help me. I inherited a part built Stuart Turner Major Beam Engine which I am now trying to finish. I have found that one of the inlet passageways in the cylinder casting is blocked solid, can you give me advice on how to clear it?

[Jo]

Assuming it is casting sand then the usual technique is to poke around with a needle to loosen it then blast it with some high pressure air to clear it.


I feel the need to mention the Stuart Major Beam is not a beginners engine, there are a number of features that are very challenging for even an experienced model engineer.

Jo

[jasonb]

I tend to use a bit of fuse wire a sit gets round the bends that something more rigid won't. Ultrasonic cleaner will also do if you have one.