Wait, what? You have a CNC machine and you ask someone else to mill your parts?
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
I’ve got best results milling the PCB with this kind of tools:
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:
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.
Self milled from 2mm thick carbon fiber sheet.
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):
Really hard. Either the carbon fiber resonates or some motors are unbalanced. However with these PID values I got somehow decent full throttle:
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.
PDB is a good plus but one can solder the leads together
Props: 5″ 2-blade, for example: http://www.banggood.com/2-Pairs-Gemfan-5030-Fiberglass-Nylon-Propeller-For-250mm-Quadcopter-CWCCW-p-976118.html?rmmds=search
Battery: 850-1000mAh 2S
Quick FPV-addon (cam+video tx) : http://www.banggood.com/FX-FX798T-5_8G-600TVL-25mW-40CH-Mini-Transmitter-Camera-Combo-For-FPV-Multicopter-p-1053038.html?rmmds=search REMEMBER TO PROTECT THE ANTENNA!
Goggles for FPV: https://hobbyking.com/en_us/quanum-cyclops-v2-fpv-goggle.html
All body parts: 16.1gr