MPCNC

Intro here

After a hiatus, I decided to revisit the needle cutter and get back to making planes from the free svg plans on FliteTest. I wanted to characterize the performance of the MPCNC and develop a streamlined workflow for creating parts that would fit together snug without being too tight.

After a hiatus, I decided to revisit the needle cutter and get back to making planes from the free svg plans on FliteTest. I wanted to characterize the performance of the MPCNC and develop a streamlined workflow for creating parts that would fit together snug without being too tight.

In my pursuit of speeding up my RC plane building, I found a new tool on the Flite Test forums, a needle cutter. This is a simple tool where a flexible piece of music wire is attached to a brushless motor to repeatedly puncture soft materials. When these punctures are spaced close enough, it acts as a cutting tool.

In my pursuit of speeding up my RC plane building, I found a new tool on the Flite Test forums, a needle cutter. This is a simple tool where a flexible piece of music wire is attached to a brushless motor to repeatedly puncture soft materials. When these punctures are spaced close enough, it acts as a cutting tool.

With the laser up and running, I wanted to try and dial in the settings to get good engravings and cut through some material. Most laser cutters are of the CO2 variety, which operate an order of magnitude faster than the MPCNC, and with two orders of magnitude more power. There are lots of forum posts about setups similar to mine, but no two machines are alike, so I had to figure out my own parameters.

With the laser up and running, I wanted to try and dial in the settings to get good engravings and cut through some material. Most laser cutters are of the CO2 variety, which operate an order of magnitude faster than the MPCNC, and with two orders of magnitude more power. There are lots of forum posts about setups similar to mine, but no two machines are alike, so I had to figure out my own parameters.

There seems to be a proliferation of inexpensive diode lasers available from overseas ranging from 1 to 15 W. It is somewhat concerning that someone can purchase such a high powered blinding device so easily. It is also very tempting…

There seems to be a proliferation of inexpensive diode lasers available from overseas ranging from 1 to 15 W. It is somewhat concerning that someone can purchase such a high powered blinding device so easily. It is also very tempting…

Now that the MPCNC is assembled and wired up, it’s time to make something! I decided to start with some simple actions with a pen plotter and vinyl cutter.