Powder Scoops - Graduated Spoons - CC Measuring Spoons by chrisjoonmiller

Last crawled date: 3 years ago

Warning: the design is in centimeters, please set the input units on your slicer. Also I am not responsible for anything you do with this data.
I needed a set of graduated scoops. Since I downloaded the Case Feeder for my Hornady LNL AP Press here on thingiverse, I thought I'd give back by designing a set of scoops for the community. I used OpenSCAD and did all of the programming myself. I even learned a couple new things in the process.
The basis of this design was to create a series of volumetric scoops to get in the ballpark of a load. Then trickle feeding in the difference. The scoop capacity is in cubic centimeters, therefore the design was also done in centimeters. This made calculating the size of the scoop relatively easy. Essentially I used a desired capacity to calculate the size and shape of a hemisphere and cylinder that sits on top of it. These two primitives' combined volume is equal to the desired capacity. I believe the math is right here, but I welcome constructive feedback if not. Also, the actual capacity may vary slightly with printer, material, temperature, and other factors.
I initially based my concept off of the Lee Dippers set, which has 16 scoops measured in cubic centimeters.
I have included what I called the Lee Set. A single STL with all of the scoops that match the capacity of the scoops that Lee provides.
I also included what I called the Super Set which is a set of 50 scoops from 0.1 to 5.0 cc in 0.1 cc increments.
And there is also each scoop in its own STL, in case you want to get specific and just print one or two.
Lee Dippers Chart here: https://leeprecision.com/cgi-data/instruct/Dippers.pdf
edit: URL CHANGED https://leeprecision.com/files/instruct/Dippers.pdf