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Another Comber / Coomber build
saw:
:offtopic: I have to ask:
--- Quote ---I always use a 3mm spotting drill, in the lathe and mill
--- End quote ---
I have never heard of it, but I have some big problem using centerdrill on my mill. :Doh:
sbwhart:
Great work Arnold photos at talk through are first class
:clap: :clap: :clap: :clap: :clap:
Stew
Stilldrillin:
--- Quote from: saw on November 01, 2011, 05:11:41 PM --- :offtopic: I have to ask:
--- Quote ---I always use a 3mm spotting drill, in the lathe and mill
--- End quote ---
I have never heard of it, but I have some big problem using centerdrill on my mill. :Doh:
--- End quote ---
Benni.
Centre drills are for making tapered holes, to locate on to a lathe centre.....
Spotting drills are for making a starting dimple for drilling, in CNC machining.
The dimple is often made wider than the drilled hole, to leave a chamfer around the finished hole.......
And, there is no tiny centre pip to break off......... :bang: :bang:
David D
saw:
Thanks Stilldrillin
(I always read out that as Stilldrinks :lol: )
I cant figger out what spotting drills is, I have tryed Google translate but no :doh:
I would like to find something that can help me centerdrill on the mill. :scratch:
Stilldrillin:
Benni.
Search Ebay, for spotting drill. Lots of them available........ :thumbup:
*Note.... NOT spotweld drill.*
David D
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