Easy adjustable PP mold making

[Frank Savage]

Update:
Use steel nosepunches for test puroses and small batches only, esp. if using 1018 or some easy machining steel. The punches go through some temp changes during casting, way much more than the body, which has some effect on the nosepunch surface. When the mold is on full heat for about an hour, it tends to occur a crust of deep blued metal, which upon cooling cracs and forms burrs. Stuck nosepunch, deeply scratched body of the die is result. Founf this the hardest way just now, when wanted to make first bigger batch. If made from heat resistant or tool steel, or cast steel bar, it may not be an issue. But this just ruined my day.
Going to make new body (steel, fast) and latest nosepunch from brass. Will give report how it come out.