Step 1: Tools & Materials
Materials list (depending on shape of filter):
For either round or Cokin P-Series Rectangular filters
(1) 9” x 12” sticky-back white “foamy” sheet
(1) 9” x 12” non sticky-back white “foamy” sheet
For Cokin P-Series Rectangular filters
(1) ½” x 3.5” x 4.5” gift card container
For round filters (all items commercially available)
(1 set) Lens filter stack end caps to fit filters (http://www.adorama.com/Reviews/pwr/product-reviews/Filters/Accessories/Adorama/p/FLSC72-Adorama-Filter-Stack-Caps-72mm.html)
(1) Maxpedition Tactical Can pouch (http://www.maxpedition.com/store/pc/Tactical-Can-Case-7p1338.htm )
Step 2: Round Filter Carrier
Each stack of three filters uses 25% less space, weighs 15% less and the end caps protect the filters using steel instead of plastic. Because the pouches have attachment straps on the back, they can be attached to the outside of many camera bags to save even more space in the camera bag.
Step 3: DIY Cokin P-Series Rectangular Filter Carrier
First I removed the internal foam rubber and then used pliers to flatten the rounded “lip” of the bottom section (to make it easier to insert and remove the filters). I flattened the edges until I got near each the curved corners – I left the curved corners as they were. I then pressed the lid and bottom of the container on the sticky-back sheet of ‘foamy’ to leave impressions on the ‘foamy’. I used the impressions to cutout each piece of ‘foamy’. I removed the stick-back paper and inserted into each section of the container. On the lid I trimmed off an additional 1/8” around the edge of the ‘foamy’ to ensure the bottom section would still close all the way (see photos). I then cut two partitions from the non sticky-back ‘foamy’. The final step was to add labels for each of the graduated neutral density filters.
The last photo shows a side-by-side comparison of the original plastic cases by Cokin and the new filter carrier. The new filter carrier requires 60% less space, weighs 40% less and is made of steel instead of plastic.