Ergonomic Hacksaw Grip

I designed this 3d-printable hacksaw grip that accepts a standard 12mm / 1/2 inch wide metal hacksaw blade. It’s very useful to get into small spaces and for flush cutoffs. Last but not least it allows to recycle broken or partially worn blades.

The blade is mounted best to cut in pull direction like a Japanese wood saw, this helps to straighten the blade while cutting.

The STLs are on thingiverse, Fusion360 sources on github.

Node RED Flow Based Programming Environment

Node-RED is a programming tool for wiring together hardware devices, APIs and online services in new and interesting ways.

It provides a browser-based editor that makes it easy to wire together flows using the wide range of nodes in the palette that can be deployed to its runtime in a single-click.

Git – Updating a Fork from the upstream Repo

Add the repository this fork was created from as an upstream remote

git remote add upstream

Fetch everything from upstream

git fetch upstream

Switch to the branch you want to merge

git checkout master


git merge upstream/master

OctoPrint Plugin for Klipper

I made a OctoPrint plugin for the Klipper 3D printer firmware. It’s on GitHub at:

Features so far:
  • Simplified connection dialog.
  • Restart Host and MCU processes.
  • User defineable macro buttons.
  • Assisted bed leveling wizard with user definable probe points.
  • Dialog to set a coordinate offset for future GCODE move commands.
  • PID Tuning Dialog.
  • Message log displaying messages from Klipper prepended with “//” and “!!”.
Some screenshots:

Deadly Cheap Power Supply

This is why I open all power supplies before using them if at all possible.
Mounting this supply would have put the housing at mains voltage. That’s also why you should never forget the protective earth connection.