Fishing Leader Line Holder-Cutter

This is used to hold a spool of leader line and conveniently be able to unspool and cut off just what you need.  It is designed to be mounted on the underside of the deck lid so that you can have easy access to leader line when fishing.

In addition to the printed parts, it uses a #17 Exacto blade held in the cutter holder.  Sorry for mixing metric and ANSI parts, but that's what I had.  A  2mm screw and nut is used to secure the blade in place, the line clip mounts to the base plate with a 3 mm screw, and a 3/8-13 bolt is used to hold the spool.  The 2mm and 3mm could easily be swapped out with similar ANSI sizes, but the knobs are designed for the 3/8-13 thread.  I originally printed the bolt and nut which worked fine but I figured the actual bolt made this more flexible for different spool sizes.  Here is a picture showing all the parts including the blade and screws/bolts.

There are two knobs so they can be locked together once the right tension is on the spool.  The spool needs to be tight enough that it doesn't just unwind but loose enough that it unreels smoothly.  This combo seems to work pretty well.  The base plate and the knob have a chamfer for different spool hole sizes but most seem to be 3/8 in so this isn't really needed but it does keep the spool from rubbing on the base plate when in use.

I printed this with .2 mm layer height, 15% infill and 4 wall loops to add a bit of strength around the screw holes.  There isn't a great way to print the clip holder so I printed it standing up with a brim.  Laying down with supports just made a mess.

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