Author Archives: admin

Turning CNC mill into a cutter (with a 3D printer)    

I combined my 3D printer and CNC mill and turned my 6040 CNC into a cutter. I designed and printed a Roland vinyl/sticker cutter blade holder. Search ebay for “roland blade holder” if the previous link is invalid. I published the .stl file for it, feel free to scroll down. To use this you need a 65mm spindle motor. The part where the adapter is attached is 49mm in dia.

First test to a paper:

And yes; first cut is the deepest! (and CNC guy takes it one step at at time..) After few adjustments and retries I got a decent stencil for some fabric prints (the logo is our FPV team’s logo).


I used just a sponge to tap the paint into the fabric (these are tube hats/scarfs/whatever). Not the best quality yet, but close enough! (next step, buy a silkscreen mesh)



Nice one evening project!

Download the 3D model here: roland_blade_holder.stl

CNC milling / carving copper PCB

I’ve got best results milling the PCB with this kind of tools:

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You can find them on ebay with words “Carbide PCB Engraving Bits CNC Router Tool 90 Degree 0.1mm”.

My settings for PCB-GCODE are:

Depth 0.1mm
Tool size 0.25mm

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In eagle’s DRC / DRU I usually set the “sizes” tab “minimum width” to 0.8mm, but with carefull positioning of the clad I have achieved 0.4mm minimum widths.

Naarmuton, a 180 size FPV quadcopter

Self milled from 2mm thick carbon fiber sheet.

Motor: RCX H1306 3200KV Micro Outrunner Brushless Motor (Performance Racing)


Motors, ESCs, PDB, power connector total137gr – 35gr = 102gr 

First flights without FPV, weight with battery 264gr:
Final setup with FPV capability, 230gr without battery and 302gr with 950mAh 3S battery. The FPV setup (camera + TX) added 32gr weight):


PID tuning

Really hard. Either the carbon fiber resonates or some motors are unbalanced. However with these PID values I got somehow decent full throttle:

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I used betaflight with these new filters:

set gyro_cut_hz = 40
set pterm_cut_hz = 30
set dterm_cut_hz = 12

.. But returned back to defaults.






This is my version of a carbon 250 quad. It’s based on Hammer v 3.0 plans (big thanks!) but I have made some modifications that suit my taste.

The carbon pieces are self milled on 1.1mm carbide tool. 16.200rpm, 0.5mm layer, 210mm/min.


Each arm weights 10.1gr. Thickness 2.91mm. Modified from Hammer arms; removed that suddenly narrowing shape (weak point) and made it “evenly breakable”. They are still 100% compatible with the original Hammer design.



The two identical base body plates weighted 23,8gr each. They are 2mm thick carbon fiber.

Motivational assembly! 100gr total at this point.


DXF’s of arms and base body

Spacers (stl) and upper deck (dxf)

First carbon fiber milling: Akroquad – a 210mm quadcopter

Frame: Now available for purchase! (25.3$)

Suggested setup:



PDB is a good plus but one can solder the leads together


Props: 5″ 2-blade, for example:

Battery: 850-1000mAh 2S

Quick FPV-addon (cam+video tx) : REMEMBER TO PROTECT THE ANTENNA!

Goggles for FPV:

All body parts: 16.1gr