UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

BulgingCap · 22nd Oct 2018, 4:22 am

I certainly would not have thought of that. I will research further with new search terms.
I have never come across this technique, or valves with holes for a tool, but it seems to be feasible. Initially I thought that I would not like to use such a tool on my British motorcycle cylinder heads in case the tool jumped out of the holes, but I suppose that most engine heads were cast iron in the period when this tool was made. The story of the Polish engineer suggests his similar looking drill could be pre-WWII.
Thanks for the info,
BC

22nd Oct 2018, 4:22 am	#90
BulgingCap Pentode Join Date: Apr 2017 Location: South Coast, Western Australia. Posts: 129	Re: Show us your drills! I certainly would not have thought of that. I will research further with new search terms. I have never come across this technique, or valves with holes for a tool, but it seems to be feasible. Initially I thought that I would not like to use such a tool on my British motorcycle cylinder heads in case the tool jumped out of the holes, but I suppose that most engine heads were cast iron in the period when this tool was made. The story of the Polish engineer suggests his similar looking drill could be pre-WWII. Thanks for the info, BC