This article was written by Martin Kok, Senior Software Engineer at Lunatech Labs
After setting up the 3D printer on the living room table and printing a few designs created by others from Thingiverse it became time to make something from scratch. Inspired by the Batman cookie cutter I found on thingyverse I decided to try to make one based on our world famous and iconic Lunatech logo.
Having decided what to create, the next important decision was what to make it in. The first candidate was Tinkercad which Michal en I used to create our 1st ever 3D dishwasher sign; however tinkercad simplicity and initial ease of use meant that the makers have sacrificed a lot when it comes to controlling the dimensions and positioning of the created shapes. Also once “fused” the shapes are stuck, which makes it very hard to impossible to make adjustments later on.
Time to look for something a bit more advanced and powerful. After looking at Fusion 360 (which I found looked to commercial and expensive) and Blender (too many features and I’m running out of disk space) I settled on Onshape. Admittedly Onshape required a little training before I could even create my first basic shape and I spend quite a few frustrating nights before I managed to figure out enough to become dangerous. But I do no doubt that I would not have suffered the same with either Fusion 360 or Blender.
Next, I had to recreate the Lunatech logo; but what does the official Lunatech logo actually look like. I searched our confluence as I am convinced that it must contain the original designs, but I could not find them (unfortunately this seems to be a recurring theme with wiki-like collections of documents and articles that do not have the support of a librarian). Not wanting to give up I resorted to making a screenshot and used it to take the measurements.
Don’t worry, I know this does not quite look like the Lunatech logo that you are used to. It is mirrored. The first versions I made were “done the normal way”, but because for technical reasons I’m printing them upside down I realised that I would have to turn them all over before baking.
With the shape and dimensions out of the way, it is time to go 3D. I created the outside wall, a rim to ensure some stiffness, and across to hold the inner box in place. I then decided to have some fun and change the centre shape. After all, although we are Lunatech on the outside, we are all different on the inside. (The final versions can be found here on Onshape: Lunatech Cookie Cutter designs; the exported .stl files are attached to this page)
Time to slice and print . . . . . . . . . . . . . . . . . . . . . . . . (18+ hours later)
With the cookie cutters printed, we are on the home stretch and the only thing left to do is prepare the cookie dough (shortbread: 1 egg yolk, 150 grams of butter, 200 grams plain flour, 100 grams sugar), mix, cool, roll, cut, and bake.
After 15 minutes at 175℃, the cookies are done and the final phase of the Lunatech Cookie Cutter project can start ….. Bon appétit