This tool is the little brother of my [first radius tool kit](https://thangs.com/mythangs/file/871749). It measures 1-10mm sizes, concave and convex, and fits into a convenient fold-up carrier for designing on the go. This radius sizes all print fine, though it was helpful with the smallest 1mm size to put a help disc at the very tip of the tool when printing to preserve the point.

Additionally, the case must print with supports. Print with the text side facing down, and add supports on the bed to hold up the top cross support.

Interior angles on the case will dictate the order of installation for the tool sizes.

_Please note_ This tool measures the _radius_ size, but many cad programs use _diameter_ sizes when drawing circles.

Radius Multitool, 1-10mm

Case.stl

I needed a tool I could not find (and was happy to procrastinate on the next project by working on this one first). I wanted a quick set of reference radius gauges to use when designing. I needed interiors and exterior curves, and then decided to park them all in a Gridfinity base.

This set covers 10-25 mm sizes, and they all live inside a handy Gridfinity storage box when not in use. The box is fitted to each size, and all slots are labeled for ease of use.

Then, I liked this set so much, I made another set for the [1-10mm sizes in a pocket-friendly package](https://thangs.com/mythangs/file/871761).

Looking now, I see a few similar kits which are all nice. Anyway, here's mine.

_Please note_ This tool gives the _radius_ size, but many cad programs use _diameter_ sizes when drawing circles.

Radius Tool with Gridfinity Base

Gridfinity Metric Radius Kit base.stl

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Radius Multitool, 1-10mm

Radius Tool with Gridfinity Base