So my brother’s wife came up with a challenge: one of their furniture thingies has gone AWOL, and would it be possible to 3d print a replacement?


It has a cylindrical attachement, and the support structure was not really up to the task, but it came out nice enough. The carbon-fill version broke in half immediately, but the HDGlass version is really though, so it might hold up. We’ll see.

fob cad


This morning I tried to fit the blind-spot mirror, and it worked!
The main ring can turn around, and the blind-spot mirror as well.

Sort of a moon revolving around the earth.

Or a mini-me sidekick for the main mirror.

Blind spot mirror

It also looks a bit like a mickey mouse. And the second mirror still needs to be printed.
What if….



Blind spot mirror

Yay! Today the heat fuses arrived from China, all the way from Shenzen, Giang Dong Sheng: SEG Electronics

But I am dead tired so I will postpone the transformer reconstruction to part 3. As I write this, my blind-spot mirror v2 is being printed…

edit: the fuses that I ordered are open at room temperature, and close at 110°C. So I am back @♦¹


Heatfuse 110

Riding a motorcycle can be tricky sometimes, and it really helps if you are aware of vehicles in your blind spot (a situation you need to get out of).

I already have some blind-spot mirrors, but they take up real-estate on the normal mirror, so I decided to put my 3D printer to work. Today I tried on the P.O.C. version (T-glass filament). It fitted pretty well, but I need to shave of some edges to make it fully rotate. The next version (hopefully the last) will be black carbon.

The mickey mouse ear will host the round blind-spot mirror.

So far so good.


I was cleaning up when I found an old project of mine: a customized Oyster card. The Oyster card is a RFID or Near Field Communication card, that you can use for traveling in the subway of  London.

To extract the relevant parts, I tossed the card in MEK solvent and watched it fall apart in numerous thin plastic layers, until a small chip emerged, with a coil attached.

Fun-fact: MEK is also known as butanone, A solvent. Evaporates very fast.


Looks like a puppy with a hump. Anyways.

The electronics (tiny) were then sandwiched between some (inlayed!!!) woodfineer layers, and presto: a customized traveling card. I remember being a bit anxious trying it for the first time, but it worked. The bus drivers did not seem to really care when I slammed it against an Oyster-card reader.

The logo on my customized card is from Tintin’s les çigares du pharaon. The thing is expired by now, they are only valid for 2 years or so.


I have a busted 12V transformer: the 220V input coil has no resistance, hence no 12V output. I felt unhappy about throwing it away, so decided to learn something by taking it apart, and possibly repairing it along the way.

The label said it was protected against overheating (125° C), so I suspected the heat-fuse was blown. After a lot of unwrapping and unwinding the 12V coil (booooring), I ended up where the fuse was placed. It was indeed blown, but the coil was still ok, so I ordered a reset-able one. The reconstruction will be part 2 🙂

Torodial transformer

Torodial transformer, 12V coil removed.

Saw a fun 3d printed planter for a bike: Colleen Jordan’s bike planter

The price/intrinsic-value ratio was a tad skewed, so I decided to model my own version, and print it on my 3D Builder:


I used red HIPS, which needed to be repaired with MEK glue, but hey… Let’s hope the plants survive, I have serious some doubts about this.

For modeling I used Onshape: