E core housing with adjustable gap

It's a bench top housing for E core with an adjustable gap in order to get the desired inductance.

I used this thumb screws http://www.thingiverse.com/thing:641854
- 2 x threaded rod M5 x 100 mm,
- 8 x M5 nut
- 8 Washers,
- 2 x springs (wide enough to allow the threaded rods to pass through and long enough to get the desired adjustable range)
- 4 x "PC Case Fan Rubber Shock Absorption Noise Reduction Silicone Screws"
- 4 x small zip ties.

Fit to core ETD54