Externet Posted April 16, 2017 Share Posted April 16, 2017 Photographic filter holders are usually metal. Looking for a source of plastic ones, to avoid corrosion. Need is to hold diaphragms instead of optical filters. Can be from any application other than cameras. Sample pictures ----> https://www.aliexpress.com/item/NEW-Camera-Filter-40-5-43-46-49-52-55-58-62-67-72-77-82mm/32655570830.html?ws_ab_test=searchweb0_0,searchweb201602_4_10152_10065_10151_10068_10130_10084_10083_10080_10082_10081_10110_10178_10136_10137_10111_10060_10138_10112_10113_10062_10114_10156_10056_10055_10054_10059_10099_10078_10079_10103_10073_10102_10096_10070_10148_10123_10147_10052_10053_10124_10142_10107_10050_10143_10051,searchweb201603_1,afswitch_1,ppcSwitch_5&btsid=146df83c-95b6-4753-b2d1-3cda58aa911c&algo_expid=c850960c-3731-4b5a-af29-60e21c040383-16&algo_pvid=c850960c-3731-4b5a-af29-60e21c040383 Link to comment Share on other sites More sharing options...
Bender Posted April 16, 2017 Share Posted April 16, 2017 The examples you show are aluminum and shouldn't corrode. Link to comment Share on other sites More sharing options...
Externet Posted April 16, 2017 Author Share Posted April 16, 2017 They will corrode undersea. Looking for plastic equivalents. Link was example of shape/construction/purpose. Link to comment Share on other sites More sharing options...
Bender Posted April 17, 2017 Share Posted April 17, 2017 If you cannot find any, you can ask a machining workshop to make them for you. Link to comment Share on other sites More sharing options...
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