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#1
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Source for lens shims?
Does anyone know of a source for the very thin round shims sometimes
used between a lens cell and the shutter? I think they're probably brass. I'd like to replace one that was somehow mangled by a previous owner. I figured I wouldn't bother trying to measure its thickness (well, thinness) until I found a supplier. The idea of cutting one out of a thin sheet is a bit daunting... Thanks. Steve To reply directly by email you'll first need to remove the food item from my posting address. |
#2
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Source for lens shims?
Steve:
Have you tried SK Grimes? They may have some. http://www.skgrimes.com/product/index.htm Jim Steve Goldstein wrote: Does anyone know of a source for the very thin round shims sometimes used between a lens cell and the shutter? I think they're probably brass. I'd like to replace one that was somehow mangled by a previous owner. I figured I wouldn't bother trying to measure its thickness (well, thinness) until I found a supplier. The idea of cutting one out of a thin sheet is a bit daunting... Thanks. Steve To reply directly by email you'll first need to remove the food item from my posting address. |
#3
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Source for lens shims?
On Mon, 14 Aug 2006 23:05:55 -0400, Jim Hemenway wrote:
Steve: Have you tried SK Grimes? They may have some. http://www.skgrimes.com/product/index.htm Jim In the words of the immortal Homer Simpson, "D'oh". No, I didn't try them, but I will. Thanks for reminding me to think once in a while... Steve Steve Goldstein wrote: Does anyone know of a source for the very thin round shims sometimes used between a lens cell and the shutter? I think they're probably brass. I'd like to replace one that was somehow mangled by a previous owner. I figured I wouldn't bother trying to measure its thickness (well, thinness) until I found a supplier. The idea of cutting one out of a thin sheet is a bit daunting... Thanks. Steve To reply directly by email you'll first need to remove the food item from my posting address. |
#4
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Source for lens shims?
FYI,
I checked S.K. grimes for a pair of shims for potential use with a 10-3/4" Artar. quoted price was about $60 each... Steve H Steve Goldstein wrote: On Mon, 14 Aug 2006 23:05:55 -0400, Jim Hemenway wrote: Steve: Have you tried SK Grimes? They may have some. http://www.skgrimes.com/product/index.htm Jim In the words of the immortal Homer Simpson, "D'oh". No, I didn't try them, but I will. Thanks for reminding me to think once in a while... Steve Steve Goldstein wrote: Does anyone know of a source for the very thin round shims sometimes used between a lens cell and the shutter? I think they're probably brass. I'd like to replace one that was somehow mangled by a previous owner. I figured I wouldn't bother trying to measure its thickness (well, thinness) until I found a supplier. The idea of cutting one out of a thin sheet is a bit daunting... Thanks. Steve To reply directly by email you'll first need to remove the food item from my posting address. |
#5
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Source for lens shims?
Steve Goldstein wrote:
Does anyone know of a source for the very thin round shims sometimes used between a lens cell and the shutter? I think they're probably brass. I'd like to replace one that was somehow mangled by a previous owner. I figured I wouldn't bother trying to measure its thickness (well, thinness) until I found a supplier. The idea of cutting one out of a thin sheet is a bit daunting... Thanks. Steve To reply directly by email you'll first need to remove the food item from my posting address. One possible source might be a local community college with a metal working course. Contact the instructor and see if he would have one of the students make the shim for you. It'd be a good lesson, determining the thickness of the existing shim, selecting the proper material and cutting the new shim to the appropriate diminsions. We had an old piece of equipment in the photo-lab at school lose a part. Really obsolete, no parts available ... Using the same part from another identical piece of obsolete equipment as a pattern, we got the school's machine shop students to make the necessary part. |
#7
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Source for lens shims?
"Steve Goldstein" wrote in message
... Does anyone know of a source for the very thin round shims sometimes used between a lens cell and the shutter? I think they're probably brass. I'd like to replace one that was somehow mangled by a previous owner. I figured I wouldn't bother trying to measure its thickness (well, thinness) until I found a supplier. The idea of cutting one out of a thin sheet is a bit daunting... You can buy brass sheet in precise thicknesses from metal stockists as - yep - shim brass. Making a round shim from it involves using a fly cutter or an old (hand drill powered) washer cutter. Since it is brass, the hard steel knives on the fly/washer cutter do the job neatly and don't leave a burr. Given the choice I too would rather buy than make - but if you can't find what you want to buy, or the cost is silly, then making them isn't actually as daunting as it at first seems. Peter |
#8
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Source for lens shims?
I can give you an ambiguous reference you will need to pursue...as I
don't have a retail source, but it may give you ideas. I have seen in previous aerospace employment stainless steel shims with NSN (National Stock Numbers) and B240 series part numbers. I know that there were some rather thin and at least 4" in diameter. This may give you a lead, but a source I don't know. |
#9
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Source for lens shims?
I take that back...
http://www.materialfabricators.com/shims.html If they can't sell you puny quantities of in-stock items, perhaps they can refer you somewhere. |
#10
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Source for lens shims?
Thanks Murray, I'll give them a try. In the meantime, I was able to "iron out"
the wrinkles with a marble rolling pin, but it's good to know about this. Steve On 28 Aug 2006 18:49:48 -0700, "murrayatuptowngallery" wrote: I take that back... http://www.materialfabricators.com/shims.html If they can't sell you puny quantities of in-stock items, perhaps they can refer you somewhere. |
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