Now that I have figured out the perfect mix to use when I’m making plaster magnets, it’s time to start figuring out their actual costs so I can get all the prices in the Etsy store updated! 🙂
Per my plaster mix experiment post 20ml plaster = $0.28
Since most of my magnets are tiny, my attempts at measuring how many ml of mix went into each were a dismal failure. So instead, I went with an average weight.
I piled a bunch of the casts onto a postal scale and then calculated the average. Once I’ve worked through all the bodies I have, I’ll make a few 10 item batches of each small mold to measure how many ml are used.
The kittenloaf used 20ml and the average weight is 0.7oz, so I’m using a 1oz = $0.40.
Magnets will be added as I work out the costs, so not all of them will appear here at first…
Last updated: 05/11/2017
|Kittenloaf (Sleeping Cat)
|Flat Cat Head
|Large Horse Head
|Corgiloaf (Sleeping Corgi)
|Small Horse Head and Mane
|Small Bird Head
Cost of Magnets
- 07004 1 inch diameter ceramic magnet $1.98/6= $0.33
- 07090 3/8 in. Neodymium Rare-Earth Magnet Discs $3.98/12 = $0.33
- 07046 1/2 in. Neodymium Rare-Earth Magnet Discs $3.98/6 = $0.66
- 10102256 ArtMinds Wood Hearts $3.89/21 = $0.19
- 0.7 Neodymium Rare-Earth Magnet Discs $3.98/3 = $1.32
Or on Etsy from MinkusMargo for $26.43/50 = $0.53
- N40. 0.125″ (3.175mm) dia x 0.0625″ (1.587mm) thick, magnetized through the thickness. from SuperMagnetMan for $20.00/100 = $0.20
- Magnum Magnetics Pro Mag Round Magnets 0.75″ dia for $6.99/50 = $0.14
The magnetic tape I am using is this one from Home Depot (1/2 in. x 10 ft. Iron Ferrite Magnetic Tape @ $3.98). Which breaks down to roughly $0.04 an inch. One 2.5 inch strip is enough to hold three pieces of paper and for most of the forms I’m using multiple strips.