… more picking and packing today. Not exciting, but satisfying at the end of the day to see a pile of boxes in the back of the UPS van.
I’m learning more about Hot Ends than I ever expected to!
… more picking and packing today. Not exciting, but satisfying at the end of the day to see a pile of boxes in the back of the UPS van.
I’m learning more about Hot Ends than I ever expected to!
Have picked and packed 40 small orders today, and about a dozen full kits.
Now labelling fast, to see how many boxes we can get on the carrier this evening.
No promises, but I hope we can clear the backlog this week (maybe working all weekend).
Will keep you all posted!
For more news, check out the mendel parts blog.
Goedemorgen,
Well, here I am in Eindhoven, and I have already packed about 100 small bags with printer parts.
We are both working flat out to ship orders. I will do a summary later today, to let you know how we are doing.
Some people thought that it wasn’t fair that I was going to get my order by coming here when they are still waiting.
Well, my order is dated 14 June, and we think that it’s the oldest unshipped order, and we won’t actually “ship” my order until I go home in 12 days time, so my being here is helping you all to jump past me in the queue!
I also intend to make a video that shows the advantages between the V.03 and the V.02 … later!
Now, back to the packing, and struggling to understand the Dutch of this PC!
James
Well, I got the lovely Heidi Stubbs to fix my back, got a lift from Susan and George back to the car, got to Dover in plenty of time, and am now in the VIP lounge (of course) on the DFDS Lines MV Delft.
It costs an extra £12 to upgrade to VIP on DFDS, which made my total ticket price £60 for me and the car, both ways. For my £12 I have exclusive use of the VIP lounge (not many people on board today), endless coffee, tea, juice, fruit and biscuits, a personal waitress (the posh restaurant is closed, but you can get their menu in the VIP lounge), all the newspapers you can read, reclining chairs, free WiFi, and you embark and disembark before anyone else.
Result, if you ask me!
We have now ordered and paid for a starter set of MakerBeam, complete with enough bearings to fix roller skates to a millipede, so I’m excited to get going actually building my first Cartesian robot in more than one dimension (I’m half-way through building the hen house door opener and closer, and I’m using a lead screw, because the door slides sideways, so I think of that as a one-dimensional Cartesian robot).
Actually, we’re still in very early prototype stage of the hen-house door opener, and already the user has requested modifications. Apparently the hens are tending to roost in the nest box, rather than their roosting perches, and I have it on authority that our hens tend to pooh a lot, especially overnight. So the latest mod requested is that 30 minutes before the door closes at night an inner shutter comes down and sweeps any hens out of the nesting box, and keeps them out over night. Then, in the morning the main door opens and lets them out to scratch around, and 30 minutes later the nesting box is automatically opened for business.
Next we will need an egg detector that will connect to the Internet Of Things via WiFi and Pachube, so that we can see when the eggs need collecting. Maybe a webcam inside the roosting box will do the trick.
Maybe there are too many other things to finish, before we get too excited by ultra sophistication in the hen run. Powering it all via a solar-tracking solar panel and a 3D printed Vertical Axis Wind Generator comes first.
I’ve been thinking about another way to connect the framing structure in open-source framing systems.
There are, to my knowledge, two main systems, Contraptor, which uses L-section aluminium framing, and which has lots of holes for nuts and bolts, and MakerBeam, which is mini T-slot aluminium extrusion.
MakerBeam differs from commercially-available T-slot in being a 10mm square section. In the UK we have, for instance, ValuFrame, which comes in 20mm, 30mm, and 40mm versions. In the US they have 8020, which comes in about every shape and size you can imagine (and then some!)
What is mostly used in the world of RepRap is threaded steel rods with printed plastic joiners held in place by lots of nuts and washers.
What I haven’t seen used that much, and which is freely available as standard extrusions, are aluminium rods, both circular and square cross section, and aluminium tubes, also square and circular cross section.
What I have in mind is a system of plastic-printed vertices that will push fit onto any of these readily-available systems.
These vertices can be male (for systems where the struts are tubes) or female, for both tubes and rods. For something like T-slot, they could be a combination.
I call these “No-Nuts Contraptor” or “Push-Fit Contraptor” although, in truth, I think this idea is less appropriate to Contraptor than to any of the other systems.
I got the idea for the name from Vik Olliver’s article on the RepRap blog, Getting Rid of Mendel’s Nuts, last June, where he is using what I would call female vertices.
As an example of male vertices, there is a readily-available system for square-section aluminium, although I think the prices for the connectors are ludicrous. (And thanks to Johan de Stigter of Utrecht, who pointed me at this Dutch company. Check the prices, and divide by the quantities!) Some interesting ideas. As someone who can’t cut a straight line to save his life, this looks both useful and printable.
Advantages
Vertices can be made in a wide variety of configurations. (Thanks to my friend, John Cosier, for the Sketchup file, which can be downloaded here.) This Sketchup file shows all the vertices in 0, 90, 180 degree angles, but they could be produced to any angle required. This would have the advantage that, when assembling a frame, all of the angles are pre-constructed by the vertices.
If joints are left “unfixed” then a structure can be taken apart, which makes the system much quicker. When you’re happy with a structure it can be made more permanent with super glue or Plastex.
Just as soon as I have my first 3D printer up and running, I shall start to produce the first experimental versions.

No Nuts Contraptor by James Hardiman is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
Well, that’s the ferry and the first night’s hotel in Dunkirk booked and paid for, and I have my passport and some Euros, and Camiel knows I’m coming, so it’s all good!
Now to launder some clothes to wear.
Well, I think all my travel arrangements are made for this week, and I have bought some Dutch ear-worms, so I think that I can say Goedemorgen.
I’m really excited at the prospect of meeting with, and working with, some very interesting people. I will keep the blog rolling!
In the meantime, here is a bunch of things to read:
I’m off to Eindhoven this week, to discover why the RepRap printer kit I ordered (and paid for) 17 weeks ago still hasn’t been delivered!
I also hope to visit some interesting folks in Utrecht while I’m in Holland.
I’m a bit nervous, but I don’t think the Dutch bite, do they? ;0)
How about that! I’ve been involved with computers for about 40 years, and never looked at IRC before.
Talk to me on http://webchat.freenode.net/?channels=reprap# I am [HAC-serg].