**Description**
My wife asked if I would make a festive brooch for the hostess of the formal New Year's Eve Party that we will attend. After designing and printing one, I decided to make pins for additional guests. Each one is a little bit different, as I thermoformed the petals by hand.

**Materials and methods**
**Materials:**
- PLA or other thermoformable filament (https://en.wikipedia.org/wiki/Thermoforming)
- Safety pins for the clasp. Mine had an interior length >16mm and a pin diameter ~0.8mm.
- CA or other strong glue to affix the pin to the back.

**Procedure:**
- Print all parts in PLA, or any other plastic that can be thermoformed. Decide which side of the petal_trio and petal_duo parts you want to consider the front of the petals. The petals can be printed at the low resolution setting for speed, but the smaller parts should be printed at a high resolution setting.
- Boil water. Pour some into a small cup or bowl. Dip one petal, excluding the square center hole into the hot water for 3-5 seconds.
- Remove petal from the water, and as soon as you can touch it, press your thumb into the middle of the front of the petal, with your index and middle finger on the back, shaping the petal.
- Repeat on the remaining petals. You can reheat petals if want to make corrections.
- Press the fully split arm (the arm with the ball end) of the pin_mount part through the petal_trio part from the back, with the partially split arm aligned behind a petal (now the vertical petal).
- Press the petal_duo onto the arm, in front of the petal_trio.
- Press the mount_cap onto the ball end of the pin_mount.
- Open the safety pin. Press the non-opening side, pintip down, into the exposed slot on the side of the pin_mount. Squirt in a little glue, and let harden.

Orchid Brooch

orchid_pin.stl

A nice bedside carafe set. Print a single wall in clear PETG with a large diameter nozzle using no infill. Make your bottom height large enough to join the outside and inside bottoms. Dip in food safe polyurethane to make it washable and water tight.

You may want to print the carafe and the cup separately to avoid stringing. You can modify the design using the included OpenSCAD file.

Carafe Set

CarafeSet.stl

**Description**
Since I buy my filters in bulk, I needed a nice little box to leave some in on the kitchen counter.

**Materials and methods**
STLs are sized for #4 Melita filters. You could scale the files for other filter sizes, but for the sake of keeping the hinges round and of a good size it is better to use the SCAD file to create new STL files for the proper size. The design is parameterized and the variables are documented. You will likely want to change the values for wd, dp, ht, and droop.

Printed at 100% infill in PLA. Walls are 1.6mm (as per thk parameter) so infill % doesn't matter much if your wall thickness is at least 0.8mm.

I prefer to print the parts separately since the base does not need any brim, but the lid benefits from a small brim to keep the hinge area from curling up.

Coffee Filter Caddy

CoffeeFilterCaddy.stl

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4806441.

I wanted a mask that would fit ME so I made one that follows the contours of a head model. Additional requirements were:
- Fully parametric so I could make custom fit masks for other family members.
- Enough filter area for easy breathing.
- Minimal material use and quick printing with a .8mm nozzle and .32mm layer height.
- Replaceable grilles for fun and artistic expression.
- A design that works with hard or soft plastics.

Parametric Respirator Mask - Darth Covid

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4677492.

I really like the seal of the Rolley, but I find that the airflow is too constricted for brisk exercise. So, I took the hollow front (O shape) and designed a larger grill. Now I can use doubled over blue shop towels without gasping for breath.

Larger Filter for Rolley

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Seedling

Orchid Brooch

Carafe Set

Coffee Filter Caddy

Parametric Respirator Mask - Darth Covid

Larger Filter for Rolley