Casting moulds for Fifth Element Stones

With these moulds you can cast the 4 Elemental Stones: representing fire, water, earth and air.
Fifth Element is not included. To form the Light of Creation and save the Earth, provide a Supreme Being of your choice 😊

The moulds can be used for casting plaster. concrete and candles.

Thanks go to SJBuilds for the nice models of the elemental stones. I scaled these down to ~68%/20cm tall and used them as mould master.

19-2: I added a small holder for the wick: easier to keep it centred in the mould. 

Printing notes

• The bottom and the sides can be printed as oriented in the file, no supports are needed. 

• When casting candles, print the bottom with the hole. The wick holder keeps it centred in the mould.

• Print 9 of the clips, and 3 more to be extra sure.

• I printed in PETG with 0.6mm nozzle and 0.2mm layer height.

• 2 perimeters should be strong enough for plaster and concrete. I printed with 3 perimeters with the hot wax in mind, but on hindsight 2 with nozzle 0.6 would have been fine. 

• It is a tall print: ~20cm. I connected the 3 side parts to each other to have a stable print and added a brim in the slider to help bed adhesion.

• The file will probably work scaled down to e.g. 75%, but I didn't try that myself. If you print a scaled down version, please let me know how that turns out.

• The bottom parts have a text with the name of the stone it belongs to. The upper parts can of course be identified by the pattern of lines.

After printing, remove the brim and cut the three tall parts free from each other (last photo, blue lines).
My deburring tool https://www.printables.com/model/403370-deburring-tool-handle works well for cleaning those sides😉. The top and bottom of the mating surfaces need some extra attention (last photo: red lines);  a good fit prevents leakage and minimizes clean-up work after casting.

Casting

The models are cast upside down, so the casting has a nice surface on top.
The volume needed to fill the mould is about 0.66 litre.

Assemble the 3 sides on the bottom. Use the clips to hold the three sides together. Stick some M3 bolts in the holes to secure the bottom to the upper part. 

For casting plaster etc., use the bottom without the hole or plug the hole for the wick.

Use the bottom with the hole for casting a candle.
Thread the wick through the hole. The wick I used just fits through the hole and turns out to be a good size for this candle, not burning too slow or fast. On the package it said: for 20-45mm candle, wick Nr. 9 (no idea if that is a universal numbering system). I use a small piece of bamboo skewer to secure the wick in the hole and prevent leaking of the wax. Clamp the wick in the wick holder to position it in the mould (not shown in the pictures).
When casting wax: make sure the wax is not too hot, or it may melt or deform the mould. I let the wax cool down until it just started to solidify on the surface (~60° C) and then poured it in the mould. The wax can shrink a lot when cooling: add more wax to fill up.

Fill the mould to about 10mm under the top. 
After the casting has hardened, disassemble the mould and release the casting.

Result

The wax didn't stick at all to the PETG, released nicely and the parting seam is hardly visible The only thing I had to do was cut the wick on the bottom and the top and cut off some of the bottom to make the candle stand straight.
If I can find some plaster or concrete, I'll try casting that and add the result to the photos.

Feedback for improvement is always appreciated!

Bart