My actual cutting parameters for aluminum sheet: Material: 1100 aluminum (I’ve cut 1mm and 2.5mm sheets) Feed: 600mm-min or 24IPM (I’ve used 800mm-min, but now I’m being conservative) End-mill: 4-flute 1.5mm carbide. I’ve used 2-flute and 3-flute; the more flutes, READ MORE
I’ve been building a leadscrew cover for the Sherline’s I’m going to sell. I think this is a must on any cnc machine. I like the classical accordion-like cover, originally designed by ixen-cnc.com. So far, the main obstacle has been READ MORE
DARwIn-OP is a humanoid open source robot developed by some prestigious universities. It’s not just a toy, but an advanced research platform; commercial version cost USD $12,000.00. Some time ago I found a guy in my city that is building READ MORE
I will start a small (indeed very small) business soon; I mean, begin to create and sell some things. As I’ve said before, I used to work as software developer, and tough it’s not as bad, machines, tools, electronics and READ MORE
I should say the hardest step in making this part was to press the start button (I’m a chicken). This 1mm sheet was held to a mdf plate using Carnauba; that seems to work nicely. Badly I made a mistake READ MORE
Up to this point I’ve worked in the lathe and the mill without worrying too much about speed and rpm calculation, trusting in my own experience and “feeling”, as a lot of hobbyists, I guess. Tooling wearing wasn’t ever an READ MORE
Today I’ve successfully tested the spindle controller box; the DigiSpeed board seems to work nicely, without any issue. I will connect the motor overheating sensor signal to the e-stop input; I’m not sure, but a e-stop signaling seems better than READ MORE
This thing is almost ready to cut. Now I’m working on the spindle controller; just a new plastic box and integrating a DigiSpeed board. I guess the first thing I will cut will be a encoder wheel for the spindle.
Making a nut from a button-shaped stock isn’t easy. So I’ve made this small fixture for the lathe. For every thread type a different tip-threaded rod should be made; in this case I needed 1/4-28. It’s a world of difference READ MORE
It seems an agile task board may be useful even if you don’t have a team. It allows to easily visualize how much work remains and reminds you what you should do. Nice.