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Showing posts from July, 2016

Buliding a Prusa i3 MK2

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I have built (or help others building) quite a few Prusa i3, from sets I sourced myself, including the self-printed parts to commercial kits from bq or Josef Prusa himself. But when I saw the latest i3 version I was surprised about the ingenuity of some its solutions.

Having used kits from Prusa3D before I knew they left no details unattended, so I could understand them charging more than others. We are very happy with the i3 we built from kit so next time we needed to get some printers I had to decide between what I reckon are two good choices: bq's Hephestos 2 or Prusa i3 MK2. H2 has larger bed but it does not have a heated bed. MK2 can do more materials and can print hotter than H2, so we stayed to that.

The kit comes is a box similar to the cardboard box of a mini-tower PC. There are different smaller boxes and plastic bags inside with the assorted components.

 And it comes with its own set of tools (not the red box but the other tools).
 Motors come well protected, as some of…

Useful uses of screen command

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Every now and then I am using command-line tools. I work with daily with OSX and Linux and they both have in common the availability of a powerful command line tool.

The same could be said about Windows, but that would be an overstatement, as CMD.EXE provides not the efficiency level that can be achieved with other systems. But even if it could, they chose to make it different.

Anyway, many times I am working over remote terminals on other's computers command line tools and one thing that may not be welcome is for a program to destroyed your temporary data or to just stop working whenever the connection is broken.

If you are using a so-called broadband router you may realize than some remote terminal sessions die for no good reason. (The real reason is that after a few minutes without seeing any traffic through a TCP connection your home router will kill the connection without you knowing it). Let say you are editing a text file on a remote computer through an ssh connection when …