Maurice I apologise if I offended you as that was not the intention.My main consideration was for your safety and wellbeing.
Drilling is not soley confined to woodturning but is a basic engineering requirement.
A master woodturner I am not but until retirement I was an engineer for 50 years so I know what I am talking about and I have to agree with Walter on this one.
During my working life I worked as a senior engineer for the 2 biggest electrical companies in the world ie General Electric of America and ABB.
I have worked as a senior engineer for the 2 biggest mining companies in the world Rio Tinto Zinc and Billeton.
I have worked as a senior engineer for BP.
During my working life my remit included training Saudi Nationals - Russians - Kazacks - Indians and also Ghanaians in engineering skills.and yes even now I can make simple mistakes when working.
All I wanted was to consider your safety and in my opinion 1500rpm is too fast.
If my posts on your thread have caused annoyance to you or any one else then I will refrain from making any comments on safety or practices and will only comment on finished pens and bowls etc.