Gridfinity Thread Spool Holder for Leather Crafters

why I made this:

My biggest hobby is leatherworking, which means, quite sadly, that I do a large amount of saddle stitching. When I undertake this painful activity my larger spool of waxed thread always floats around my workspace. It's a silly problem to have and I wanted to fold it into other hobby: gridfinity organization.  My intention was to have a post size that would fit a variety of larger thread spools of various diameter as I work with different types/color/etc of thread while working on my leather projects. For those wondering: The spool of waxed thread in the picture is a 70 yrd Maine thread, which is commonly used on my projects, I know you were wondering – it's the real reason why you clicked on this.

This 2x2 gridfinity trinket was designed in fusion 360 based off of Vector's “Gridfinity Parametric Box Blank” (big thanks, you're a wonderful human for enabling us), and it's my first attempt at making my own gridfinity thingy. I'm hungry for feedback and interested in doing further revisions / iterations to improve this design as it did effectively solve an annoyance in my life. Feedback/comments are welcome.

Features:

• The spool post has a base diameter of 42mm, while the spool rod is 25mm, so any spool of thread larger than 25mm and smaller than 42mm (which for me was all of the ones I own) will be compatible with this.
   
• A center hole in the post for additional needle storage. This hole was originally designed to increase the rigidity of the post, but then logic dictated I put something useful in there.
   
• An additional hole to place a 6x2mm magnet on the side of the post base is there for you to use. It's intended to provide an additional space to hold odd shaped needles underneath your spool. Yknow, the ones you use like once a year or something.
   
• Eleven 3mm holes for needle storage (or whatever you want to stick in there, good luck). they are this size to accommodate thicker saddle needles used for leather working. 
   
• The post base is angled back slightly (I would've angled it more, but some of my thread spools are quite large and would've rubbed on the base) to make interacting with the spool marginally easier. it's over engineering at it's finest.

My print settings, as shown in the photos:

0.20mm layer height
PLA 
20% infill

post processing notes:

• Tossed a few 6x2mm magnets down hole in the center post to keep those needles in place & at my preferred height
   
• Glued in an additional 6x2mm magnet at the base of the spool to hold my larger curved needles and such
   
• Added a piece of leather to receive and protect the tips of the needles and make me feel like I'm such a badass for doing it
   
• Glued in the typical 6x2mm magnets on the bottom
   
• Thought deeply for 23 second about sanding the spool post, but then I moved on with my life when I realized that it would not create any additional value or self-worth

Random thoughts about the design:

• The leather strip could (should) be swapped out for a 60 x 10 x 3 mm magnet bar, which would probably be faster, cleaning, neater, tidier, funner, etc
   
• The angle of the needles dictates where in your grid this will be placed.
   I thought about having the needles be straight up and down (90 degrees, vertical, perpendicular, so on) to enable more flexibility for gridfinity users, but I didn't do it. Partly because I'm a utilitarian mongoloid, and partly because I'm not even sure how many people will use this cute little phallic-shaped trinket. If requested I'll totally add it.
   
• Lastly why are there eleven 3mm holes for needles? 
  Well, it just happened that way when I made each 3mm hold equal distant. now, I tell myself that one of those holes is not for a needle but for the thread to run through, so I can then quickly find the end of my thread and pull it. And, I'm going to be honest, how much I like it is in direct correlation to how much my gridfinity baseplate doesn't slide around. it slides around a lot, and so I kind of hate this “feature”.

HUGS.