Preview: new Lines for new Schorsch


The last months i spent (half) my time at Bauhaus-University Weimar and haven’t done that much Schorsch but using it. That time is over now. New Schorsch is more accurate for big prints and uses std. BBs to get rid of the LM8UUs old Schorsch uses. X and Y are assembled and wait to be mounted to the housing. A very nice housing. Z isn’t build jet.

Schorsch is [printing sth. that is] going near space!

ROCKET_Tip01Recently, a guy named Karl called me with his idea of building a Model-Rocket in order to start his new life in Rocketscience.

He already had everything but the cap so he sent me a Rhino-file with his calculated shape and now we have a few Caps that should make the Rocket go about 500m high. Above you can see the tip right out of the printer (left) and after sanding/acetoning (center, right). It is about 2.4g for the cone and another 1.2 for the bottom. After sanding and acetoning the should be 3.4g in total for the tip. Not that bad – with a .3mm nozzle they could weight around 2g at all!

Maybe the future will bring us some lower restrictions here in Germany so that we can use stronger Motors to lift something more than a few hundred meters…

Heatwave? – here is what you do:


If the only thought you have is ‘so hot’ – What are you doing? Cool down?

I will and i also will make noise. So everyone knows that there is someone chillin’ the hard way!

The picture above shows my first model of a ducted fan, a propeller driven turbinelike thing. I have so many sparemotors for the hubsan x4… now what else can they do for me during these temperatures…

The shown propeller doesn’t have much power. I will have to try again tomorrow if there is time.

Batterycase and mount printed for Sigmas Karma


Recently i cracked my original battery-case open to fix a broken cable. Unfortunatly Sigma glued it so it is broken now. I decided to print my own case that has not to be glued (f*** you, Sigma!) and is waterresistant. Having a case i needed to fix it to my bike so i rebuild the bayonett. It worked at first test. But now i think: ‘Damn, why did i rebuild a stupid proprietary connector….?’

crazy ringlight uses parts printed by SchorschXY

iri01 iri02 iri03 iri04

You are looking at a special ringlight Timm Burkhardt and me buildt for dasschmott. Actually i only made the black parts holding the nine CCFLs while MXAV concepted and assembled the hole light.

It uses nine CCFL from old EPSON-scanners. The lights are fixed on one end so you can move’em like you want.

I am very interested in seeing first portraits of faces with sunglasses….

circumventing playbooks build-in charging circuit


another useful thing about 3D-Printing is the fact that you can make own parts to add total new features to existing products. Or just keeping them alive. The shown red part was constructed in Rhino using a photo of the Batterie-connector. It took about 40min to do everything.

In this case my playbook had not seen its original charger for one single week. Since i did not know it won’t charge on any of my others i kept it in use. Sadly it went down to 0% after hanging it onto a charger for a few hours. Now even the original charger charges the battery only up to 1V (yes, 1, one, uno). As it turns out the playbook then boots up but stops┬ácharging. I can only think of this as beeing f***ed by the developers. F*** you, Blackberry! Your phones work well so why this peace of crap???

Nevertheless, now the tiny charger of the hubsan x4 does the job quite well. 500mA coming out of the USB should charge one of the two batteries in about 6 hrs. I will let you know if it works.

going back NO-coreXY for a while…


that cute little face is made out of two simple geometries. Both are printed with the same Firmware BUT the left one with CoreXY enabled and the other one with X/Y resolution * sqrt(2) to fix the scaling.

Although the infill seems problematic on the right one it is the left one that makes problems. It is not round!!!

Here’s another picture, this times right one is coreXY enabled:


You can see a flat part right from the top of the right part while the other part doesn’t show any bigger problems. To be exact you can see the inset, that’s it. That’s the biggest issue with coreXY in Marlin for me, exept homing y wich is just a little ugly.

I will use normal tweaked firmware until it is fixed.

Too light to fly

hubsan x4_7

(pictures without 240mAh battery)

First impression flying this: ‘…silence…’

Second impression (immediatly): ‘Stop it! It’s going up!’

Third: ‘Motors off & catch it!’

Yeah. Seems like a kind of dissapointment that the Hubsan-controller can’t handle the motors at lower levels. Or the firmware quits. To loose hight you have to set the power to almost zero. If you got zero your copter will fall and only level if you turn the motors back on. But then it gains hight again and it repeats. This thing is almost uncontrollable. Haven’t changed motors (around 90min old, one new) or propellers jet.

hubsan x4_6

The frame was made with SchorschXY, scliced by Cura and meshed/modeled in Rhino4. Cura says 2.93 gram (incl. 1 skirt or ~0.03g)

now for some humming

hubsan x4_3

hubsan x4_2

hubsan x4_4

If you haven’t seen a quadrocopter like the Hubsan-X4 (or whatever name it got from a reseller) you might not know that the sound they make during flying is like a swarm of hornets. It makes it awkward to fly near people who just want to relax…

I fixed that a little by building a frame that’s significantly lighter weighting only 3.8g vs. the original @8.2g. I will try another one that is 40% lighter. This one is stiffer than the original. You see it lacks a lot of features the original one offers like housing, feet and a slot for the battery.

On the other Hand the loss weight makes it really quiet. Sometimes there that hissing sound once in a while but that only seems to appear when flying sideways…(?)

hubsan x4_5