New GCodePrintr Release 3.10

A new release of GCodePrintr – The 3D Print App has been published today. This update which comes with several bug fixes and some nice improvements.

★ Share a print with photo or thumbnail with other apps (e.g. twitter, pinterest, etc.)
★ Improved Macro Dialog with Gcode drop down list
★ Partial Russian translation (Thanks to Alexander Borovensky)
★ Anycubic printer added to supported list

Several Bugs Fixed:
Fixed problem when reconnecting to the background service
Fixed issue with web-upload (special chars in multipart boundary)
Fixed wrong painting of G2 gcodes
and more

GCodeCNC App – Work in Progress

Launch Icon

This week I made some progress with the GCodeCNC App. The App will be a fork of the GCodePrintr 3D Printing App, but optimized for CNC machines running GRBL. Icons, splashscreen and basic App customization work is done.


The layout for 10″ tablets looks good now, but there is still a lot of work . Many 3D print specific functions need to be replaced or removed. Special GRBL commands need to be added and parser for the response written.

But nevertheless, I can already use the App to control my Shapeoko CNC ! If you are interested in testing the beta, feel free to contact me by email.

Rheinhessen MTB Tour

Kleine Jahresanfangstour durch Rheinhessen. Diesmal mit meinem 29″ Hardtail da mein Fully erstmal neue Dichtmilch in den Tube-less Reifen braucht. Bei kühlen 4-6 C° freut man sich über jeden Anstieg.

New GCodePrintr Release 3.08

A new release of GCodePrintr – The 3D Print App has been published today. This release is a minor update which comes with several bug fixes and minor improvements.

  • Updated Android target release (26)
  • New splashscreen method (compatible with 26)
  • Show when webserver is in failed state and improve debugging
  • Improved capture of camera picture on Web interface
  • Fixed several exceptions and bugs.
    • e.g. avoid sporadic hangs when printer responds with echo:processing

Mini Lathe

I got a mini lathe for Christmas from ebay (~35€). It can be used for small wood pieces only.

Mini Lathe

Product description (in German):

Dies ist eine Mini-Buddha-Perlenmaschine, kompakte und tragbare Größe, leistungsstarke Holzdrehmaschine und schönes Aussehen. Mit erschwinglichem Preis und hoher Qualität ist es eine notwendige kleine Maschine für Buddha-Perlenliebhaber.

Speziell für Heimwerker, kleine und tragbare Größe mit starker Leistung.
Transparente organische staubdichte Glasabdeckung mit super konvektiver Kühlöffnung.
Die Schweißlinie ist mit einem vollen Schrumpfschlauch abgedeckt.
Mit 7 Stufen des Netzteils können Sie die Drehzahl einfach anpassen, um unterschiedliche Schnittgeschwindigkeiten zu erreichen.
Hochqualitative Aluminiumlegierungsbasis und reines Stahlstrukturbohrfutter.
Super großer Drehmoment-Kugellagermotor, maximale Drehgeschwindigkeit bis zu 7000 RPM, die ultra starke Schneidkraft mit niedrigem Geräusch zur Verfügung stellt, können Sie es zu Hause verwenden.

CNC Wood Turning

After doing some manual wood turning, I tried the lathe together with my Shapeoko Mill to do some CNC wood turning.

Mini Lathe mounted on Shapeoko workspace

In a few weeks I can post more about CNC wood turning…. stay tuned

CNC Christmas Decoration

For Christmas I made some nice home decors using the Shapeoko CNC mill. I used Easel to design them and generate to tool path.

Small Star (two wooden sheets glued together)
Cut wood from a pappel tree using a chainsaw. Milled out a star from one piece and it with walnut oil. Then cut a star formed pocket in another piece and put the star in the pocket.
My Shapeoko while cutting a plate with a star ornament. (tablet running early version of GcodeCNC)

Shapeoko Spindle upgrade

As written in the previous blog post, I have bought a new CNC spindle motor for the Shapeoko. The old spindle was a cheap rotary tool (like a Dremel rotary) which was very inaccurate and loud . (use with earmuffs only !). Another disadvantage was the 3mm collet, it did not hold the drill bits very well.

Old spindle motor

In order to install the new spindle, a adapter plate is needed. I read a few posts about drilling a adapter plate but I decided to try a 3d printed plate. It took me a few tries to find the right material thickness and infill settings, to avoid bending when milling.

Designed with OpenSCAD and printed in PLA on my Multec Multirap 3D Printer (Using GcodePrintr App). Please contact me by email if you need the STL or OpenScad file.
Carrier with adapter plate
Carrier with adapter plate and spindle

Once assembled, the new Spindle sits tight and does its job very well.

Spindle Motor mounted with adapter plate

The new Spindle Motor is much quieter and more accurate. I can highly recommend the upgrade !


  • Quiet
  • Accurate
  • ER11 Collect (up to 6mm)
  • Variable Speed (3000-12000r/min)
  • Speed control through GRBL (optional)
  • Inexpensive (99€)

New spindle for Shapeoko arrived

0.4KW Spindle Motor (from ebay)

Product Description
The wide voltage PWM DC brush motor speed controller applies to DC 12-60Vlow voltage permanent magnet brushed DC motor. The operating voltage is wide voltage (DC) DC12V-DC60V (Max 65V). The default potentiometer control is 5K-100K, the defaults is 10K. MACH3 -PWM speed control signal input, external PWM input requirements: level 3.5-12V VPP, frequency 1K-10KHZ, suitable for MACH3 spindle speed control. Soft-start function. Prevent excessive current caused by the motor and power damage (default 0 seconds soft start), 0-5 seconds adjustable. Control power: 12V120W, 24V240W, 36V360W, 48V480W, 60V600W.

13pcs(13 size ) ER11 PRECISION SPRING Spannzange set:

Gripping Range 0.5MM to 7MM (3/128″ to 17/64″)
Run-Out Tolerance 0.015MM (0.0006″)
First Class 1065 Carbon Steel
Hardened & Precision Ground
  • Condition: New
  • Input:AC110V/AC220V±10%  50/60Hz
  • Output: DC48V 10A
  • Adapter power: 480W

Spindle Motor:

  • Work voltage: 12-48VDC
  • Rotation speed: 3000-12000 r/min
  • Power: 400W
  • Torque: 500mN.m
  • Insulation resistance: >2 Megohm
  • Dielectric strength: 186mm
  • Diameter: 52mm
  • Axis collet Length: 48mm
  • Diameter of Axis collet holder: 16mm
  • Repeat accuracy: 0.01-0.03mm
  • ER11 collect: 3.175mm
Package Content
  • 1 x 0.4KW spindle motor with with ER11 3.175 collet
  • 1 x Mach3 PWM speed controller( include potentiometer )
  • 1 x  Mount bracket with screws
  • 13 pcs (different size 1mm-7mm) ER11 collets
  • 1 x Power supply 48V 10A


ROM – Die ewige Stadt

In den Herbstferien ging es mit dem Auto nach Rom (1200km!). Um die Fahrzeit auf zwei Etappen aufzuteilen machten wir einen Zwischenstopp am Gardasee.


Am nächsten Tag fuhren wir weiter und machten einen kleinen Umweg an das Lamborgini Werk & Museum in Sant’Agata Bolonese

Lamborgini vor dem Museum

Danach gings weiter nach Rom , unser Hotel was das BOMA Countryhouse, etwas ausserhalb von Rom.

BOMA Countryhouse

Die nächsten Tage erkundeten wir zahlreiche Sehenswürdigkeiten und den Strand in Ostia. Hier ein paar Fotos:

Auf dem Rückweg nahmen wir den Gotthard Pass (statt den Tunnel) und waren von der Aussicht begeistert: