Tin Falcon
Well-Known Member
- Joined
- Jul 9, 2007
- Messages
- 7,207
- Reaction score
- 787
Success finally
As many of you know an optical center punch of the Mark on type as sold by Enco and others is a great layout took. this especially goes for those of us who do not have a DRO on the mill. these critters sell for around $40 and up these days.
Manny moons ago I decided to make one. Easy enough I thinks. Well made the body and the punch with not problem but a couple attempts still left me without a usable magnifier.
I am not sure what went wrong I even found a reference on optics and did some calculations. I used polycarbonate for the lens they make safety glasses out of it so it should work.
At some point I bought a piece of Lucite rod from Enco and it has sat in the stock rack.
Well last night I took the rod lopped off a piece and made another attempt to make a lens no real measurement for the length and eyeballed the lens radius.
Well low and behold I now have a shop made working optical center punch the lens is not perfect I may tweak it some but it works well enough to use.
Seems like sometimes a project has to age a bit before it wants to be finished.
Tin
As many of you know an optical center punch of the Mark on type as sold by Enco and others is a great layout took. this especially goes for those of us who do not have a DRO on the mill. these critters sell for around $40 and up these days.
Manny moons ago I decided to make one. Easy enough I thinks. Well made the body and the punch with not problem but a couple attempts still left me without a usable magnifier.
I am not sure what went wrong I even found a reference on optics and did some calculations. I used polycarbonate for the lens they make safety glasses out of it so it should work.
At some point I bought a piece of Lucite rod from Enco and it has sat in the stock rack.
Well last night I took the rod lopped off a piece and made another attempt to make a lens no real measurement for the length and eyeballed the lens radius.
Well low and behold I now have a shop made working optical center punch the lens is not perfect I may tweak it some but it works well enough to use.
Seems like sometimes a project has to age a bit before it wants to be finished.
Tin