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Thread: Centering microscope
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30th Jul 2014, 06:41 PM #1Most Valued Member
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Centering microscope
Hi all. Ive always been keen on the idea of a centering microscope (optical centre punch also on to do list) but given my needs are not high and their prices its clear ill probably never aquire one. BUT I have to ask, has anyone ever thought about making one using a S/H low magnification microsope? Good quality old scopes are a dime a dozen can be had for under $20 - $30 in the U.S. An objective/eyepiece combo with 10X would do nicely. Challenging part would attaching a post to fit in collet and align along optical axis. Even more chellenging would be the cross hairs being in focus with the workpiece.
Thoughts?
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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30th Jul 2014, 06:50 PM #2Most Valued Member
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Replying to my own thread. How desperate am I!!!
Anyway feel free to shoot me down on a silly idea. Im in hospital with my son. He just had his tonsils out and I been here all day. Theres only so much stuff you can look at on ebay. Gumtree. Grays etc. Etc. Now im making up more projects.....like I dont have enough!Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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30th Jul 2014, 07:19 PM #3Most Valued Member
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Gimme a minute! I type slow lol
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30th Jul 2014, 07:46 PM #4Most Valued Member
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Take all the time you want. Im here till tomorrow!
Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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30th Jul 2014, 08:15 PM #5
Aldi have some camera/USB based microscopes on sale this weekend for $50...would you like an electronic solution? Probably better if you're talking CNC, though.
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30th Jul 2014, 08:41 PM #6Philomath in training
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If all you want is 10x (and for basic work I think anywhere between 10x and say 25x is all that is needed) there are probably relatively cheap examples on ebay (mainly in the US) that pop up every so often. You could make a microscope but with the move towards digital cameras old school optical 'scopes are going for less than the cost to produce them.
Michael
Olympus VMF 2X Stereo Microscope Body With 15X NEW Eyepieces | eBay
C Baker Measuring Microscope in Montmorency, VIC | eBay
http://www.gumtree.com.au/s-ad/maids...box/1052584545
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30th Jul 2014, 08:44 PM #7Most Valued Member
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Well of course I have lol
I have a couple of projects on the go to do with them.
Been out to the shed to grab a scope along the lines of what you are talking about.
First on microscopes its not just the eyepiece you have to add the objective lens. The smallest eyepiece I have is 15x the smallest objective is 8x thats 120x thats a lot for a centering scope. You only have about 1mm field of view.
20x can see to well less than 0.01mm. with a 6mm field of view. there is a pic somewhere on here I'll try and find it.
Next problem is the image will be up side down and back to front. Now a mirror might fix half that problem.
Alignments aren't to much of an issue as along as you don't want adjustable focal length, the depth of field is to shallow for you to be to far out.
cross hairs are more of a issue, focus is easy. you use the eyepiece movement for that. Work piece focus is easy you just use the Z axis.
One project I play with now and again starts with one of these
Mini Outdoor Compact Adjustable Pocket Monocular Telescopes Scope 8X 20mm BAG | eBay
I'm thinking about using one of the Porro-prisms are the mirror.
Also by changing the distance between the objective and ocular you increase the power.
I have another monocular on the way that uses a roof-prism
Though, I am liking the microscope idea as somewhere to steal a focus slide.
Parallax error if there is anything is something I'll have to worry about later.
Stuart
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30th Jul 2014, 09:07 PM #8Most Valued Member
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Hi splinter I would prefer a purely optical system and do away with the need to fire up a pc or even a screen.
Michael. I have steered clear from stereo scopes thinking it may complicate matters. Agreed there are some nice microscopes out there going for a song.
Stuart. Thats why I figured on canibalising a microscope. You already have a quality optical system with objective and eyepiece, focus and prism. I qas half hoping the optics would be correct way round already on a microscope?
Seriously considering this:
Lot of Three AO American Optical 60 Sixty Spencer Monocular Microscopes | eBay
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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30th Jul 2014, 09:09 PM #9Most Valued Member
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Might have been over stating "well less" than 0.01mm a little. Make up your own mind.....of course its better than the picture.
http://www.woodworkforums.com/174817...ghlight=marcel
Stuart
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30th Jul 2014, 09:25 PM #10Philomath in training
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There is no objective though. If buying in bulk, why not this -
LOT 3 Perkin Elmer TLSM 1 Hand Held Measuring Reticle Inspection Microscope | eBay
Look to be complete and you could probably sell off the other 2 to recoup some cost.
As well as toolmakers' microscope, look for "inspection microscope" as well. I found this one this way
http://www.woodworkforums.com/182394...ml#post1751671
Michael
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30th Jul 2014, 09:36 PM #11Most Valued Member
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Thanks michael. No objective... I missed that! Those reticle inspection scopes look the go.
Stuart. I recently got one of those reticules calibration slides. For the price they are ok!
Who wants to go thirds in those inspection microscopes?
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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30th Jul 2014, 10:06 PM #12Most Valued Member
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2 already spoken for. Who wants the last one?
Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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30th Jul 2014, 10:29 PM #13Most Valued Member
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ummmm If you're going to spend that sort of coin, you sure you don't want to just buy one?
Enco - Guaranteed Lowest Prices on Machinery, Tools and Shop Supplies
Not that I have anything against making stuff just coz you can
"Stuart. I recently got one of those reticules calibration slides. For the price they are ok!"
They are but it wasnt so much about the silde. just showing what 0.01mm graduations look like at 20X.
Stuart
p.s. before you buy those other scope you'd really want to know power and focal length.
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30th Jul 2014, 11:02 PM #14Most Valued Member
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Party pooper! Yea alright you got a point but if we each buy one then we may get it for under $100 each delivered.
Ok refresh my memory. Power, is that magnification? so thats nof just the objective focal length x eyepiece focal length? The power may be a tad high but figured eyepieces are cheap and can be replaced? As for focal length, its going to be mm and not M surely ballpark for what we want??? Ok. Im really wrong aren't I??????
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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30th Jul 2014, 11:12 PM #15Most Valued Member
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You've probably already loked but this is what it comes with:
TESTING & COSMETIC NOTES:
Please note that there are small dust specs on the eyepieces.
COMPONENTS INCLUDED IN THIS AUCTION:
• (3) - MICROSCOPE BODY
• (3) - SWIVELING EYEPIECE TUBE
• (1) - STARIGHT EYEPIECE TUBE
• (3) - 1:1/0,06 F 60 GERMANY OBJECTIVE
• (2) - 10XWF GERMANY EYEPIECE
• (1) - BAUSCH&LOMB 15XWF EYEPIECE
• (3) - MICROSCOPE ADJUSTMENT MOUNT
• (2) - HANDLES
F60 is that the focal length?Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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