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15th August 2012, 06:55 PM #46
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Thanks Bruce,
Originally Posted by Abratool
Very nice work Phil
I dont know whether to make or buy. Have always had a need for one of these.
You have made it sound so simple to make the whole thing.
Well done.
regards
Bruce
It has surprised me how easy it was to make. For the focal length I just measured the overall length and used that to determine the radius of the eye piece. It seems to work well. I have bitten the bullet and ordered an ER32 collet chuck and collets and when they arrive I will be making a centre punch along the same lines as the optics.
Phil
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19th August 2012, 09:22 PM #47
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Well I couldn't wait for the collet chuck so got to and machined the centre punch. I made this out of a piece of silver steel and hardened and tempered it. I also reshaped the main body and machined an 'O' ring groove in the bottom.
I then gave it a test run and don't think I have ever put a centre punch mark so close to the intersection...ever
Phil
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19th August 2012, 10:17 PM #48
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Great work Phil, I'll copy that one of these days
Stuart
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19th August 2012, 11:52 PM #49
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Thanks Stuart,
It was worth making, especially with the way my eyes are going
.
Only thing left is to make a box to put it all in. With my woodworking skills, it will mean a trip to Bunnies to get one of the little boxes from the craft section.
Phil
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21st August 2012, 11:11 AM #50
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Of Interested,the model engineer workshop No 191 has the details and making the
Optical Centre Punch in stores now.
Eddie
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21st August 2012, 04:39 PM #51
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Thanks for the suggestion
Eddie Originally Posted by TKO
Thanks for the tip on the Model Engineer Workshop no 191
I will head up to the newsagent, to see if they have a copy.
After reading about Phils work I was about to order a Veritas Optical Centre Punch from Canada.
I really need one of these as my eyes are fading.
Went out hunting a week ago, flat out seeing anything in the dim light of the afternoon
Regards
Bruce
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21st August 2012, 04:57 PM #52
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The Veritas looks like something for the woodies Bruce. Buy a Dankroy if you're not going to go the DIY route. Originally Posted by Abratool
Eddie
Thanks for the tip on the Model Engineer Workshop no 191
I will head up to the newsagent, to see if they have a copy.
After reading about Phils work I was about to order a Veritas Optical Centre Punch from Canada.
I really need one of these as my eyes are fading.
Went out hunting a week ago, flat out seeing anything in the dim light of the afternoon
Regards
Bruce
'DANKROY' OPTICAL CENTRE PUNCH - precision made in uk | eBay
BT
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21st August 2012, 05:37 PM #53
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Dankroy
Bob Originally Posted by Anorak Bob
Thanks for the suggestion, to go with "Dankroy" I had seen them on Ebay but did not know what the quality was like.
If you reckon they are the go then I think I will run with the Dankroy.
It seems lately, I have got a lot to do & the DIY projects get pushed further back.
regards
Bruce
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30th August 2012, 06:11 PM #54
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Purchased an Optical Punch
I ended up going the lazy way, rather than making one, & purchased a "Dankroy" Optical Centre Punch out of England as per BTs suggestion. Thanks Bob.
It arrived this afternoon.
Very pleased with it, & like lots of things, should have had it years ago.
Makes it easier to be accurate, as Phil said, with fading eyes.
Thanks for the input everyone
regards
Bruce
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