I inherited a few sets of wrenches lately, and I didn't have a place in my pegboard to hang them.
After looking at other models on Thingiverse, I was able to determine that there weren't any of these out there that would actually fit the wrenches I have. (Up to 1" SAE and 22m Metric box-end)
I got out the calipers, sat down, and decided to solve my problem.
I liked the idea of using holes on-center to mount the holder (so I can twist-tie or zip-tie it to a pegboard) and I liked the idea of having the wrenches evenly spaced (on center). I also wanted the holder to fit the tools I have with a minimum of fuss.
I also wanted it to be expandable in the future just by hanging a new holder with different sizing next to this one.
So with this design the wrenches are spaced on-center. The ends of the holder will have half of a space between wrenches, allowing you to butt another holder right up next to it.
It also does some rudimentary math for determining mount hole locations based upon your pegboard (or desired mounting method) measurements.
Getting Started (Measuring your wrenches)
Before we get to the actual measurements, space out a few on paper, and decide how close (or how far apart) you'll want them. I'd recommend you use the biggest wrenches for determining center spacing.
I laid out my two largest wrenches on their sides, and marked the right-hand sides of the necks (because I'm right handed) with a pencil on a sheet of paper beneath them.
Then I measured the distance between the lines. This can be the on-center spacing between wrenches.
Wrenches with pencil lines to the right-sides.
Measuring the distance of the pencil lines. This is the w_oc spacing.
Step 2: Measuring the wrenches.
You'll need to measure the largest wrench in the set, then the smallest wrench in the set.
Each wrench will get two measurements.
The thickness of the neck, and the outer-diameter of the boxed end.
Measuring the neck of the largest wrench.
Measuring the outer diameter of the largest wrench.
Measuring the small wrench -- you probably should measure the _thickest_ part of this handle.
Measuring the outer diameter of the small wrench box end.
I set the caliper to 4mm to test hanging the smallest wrench.
Step 3: Enter the values for your wrenches in Customizer.
You'll need to put the specs for your wrenches into customer.
You may also want to measure your peg-board, or wherever you plan to mount things.
The first mount holes will be automatically placed into the first wrench opening big enough for the holes (left to right, that is). If you want the holes in an opening more to the right, use the mount_advance settings to force that.
If there isn't an exact match (common denominator) between the wrench spacing and the mount spacing, you can increase the 'mount slew' which will let it place mount holes in wrench openings that are +- the mount_slew from a multiple of mount_oc.
In my case, I'm using zip ties and peg board, so I can get away with holes being off by a couple mm either direction and still be able to mount the holder.