This time, at the Sheffield Hardware Hackers and Makers build day, we had everything from Arduino to 3D Printers (obviously ) and everything in between.
But first, we where reunited with our Pursa Mendel. One of the group members had taken it away to get it up and running. We can’t thank him enough for doing so! When we first started building the Mendel we always kept in mind the idea as using it as a educational tool as it was being built. But we just needed that final big push to get it running.
Below is the machine in a state almost ready to print. The X, Y and Z end stops – micro switches, needed to be re aligned because they had been knocked out of line during transit.
We where able to get the X and Y end stops re alined, but we would haft to sort the rest out on the next build evening.
- More to follow…
The Mendel 90 fixing
Within the build day we where able to get hold of some micro drill bits and other things and stuff…
After successfully removing an amount of burnt plastic from the extruder. We did this by heating up the extruder up to temperature and digging out the burnt plastic.
The first image shows the “things and stuff” bought and the second one shows the print quality after the extruder has been un blocked (how it should look).
We also had a group member bring in an Arduino robot an AAR-04. It was programmed from the Arduino IDLE. There are two motors that drive the device back and forwards and a ball bearing at the front that keeps it in line. There are also some sensors at the front of the board, just by the ball bearing, these allow the robot to stop before it hit a surface.
You can take a look at the video below of the robot working…
On december the 14th we had our monthly build day at Access Space. We had a large array of 3D printers and electronic projects
being worked on, some of the things that went on throughout the day include...
- 3D Printing parts to improve the hack space
- Laser Cutting
- Tinkering with electronics
3D Printing parts to improve the hack space
We have been hosting our meet-ups at Access Space for around 9 months now. From the start Access Space has very kindly given us a space in there Refab Lab for us to store and use our 3D Printers. We where asked to put forward suggestions for in ways witch we
could improve the hack space. We discussed with Access Space about making it an easier space to work in. We decided to create and print some coat hooks. We drew up some 3D coat hooks in Open SCAD, a free open source 3D CAD programme.
Once the object had been Compiled and Rendered it was exported as a STL file, it could then be sliced and printed. altogether we
printed four of the coat hooks, in total we had three printers on the Job. Including the small foldable, portable printer that
has been made by one of the group members (we will try any get picture).
This above is this is the finished product. The coat hooks where mounted on to a pice of wood witch was screwed on to a shelving
One of the 3D printers that was brought along to the build day was a SUMPOD Delta, this printers X,Y and Z axis sit on three
threaded rods. Some pieces where designed using Ink Scape (a 2D open source CAD programme) and laser cut. The pieces where to
mount the stepper motors on to the printer.
Among all of this we also had some people with Arduino's creating projects, including light synthesisers.
We would also like to thank Access Space for providing us with a work space and access to tools and machinery in there Refab Lab.
The next meet up will be held at Access Space on the on January the 27th.
You can keep in contact with us by following us on Twitter @SHHMakers or on our forum at: https://groups.google.com/forum/#!forum/sheffield-hardware-hackers
This meet up we had many things to be discuss. Some of the things that we went through…
-A review of the Hacker Day at the Hallam University
-Festival of the Mind 2014
-3D Printing in Sheffield
-When the next build day will be held
Following a successful Hacker day at Hallam University we returned to Access Space. At this event we had met a fair few number of new people who showed interest in the group.
Because the Mendel 90 had been transported around it needed some work doing to it. The printer did not seem to be homing it’s Z axis. It was soon apparent that one of the cables for the Z micro switch had worked its way off. This was an easy fix, the cable was re-soldered on to the micro switch. When we tried to home all of the axis, the Z axis did not want to move at all. On closer inspection, the right hand threaded rod was screwed in so tight at the bottom that the stepper motor was unable to move it. Once we had loosened the threaded rod the z axis were free to move. Before we were able to move the machine the Z axis needed to be levelled we did this by positioning the Z axis at about 100mm above the heated bed. Then using a spirit level placed on top of the extruder assembly, the Z axis was levelled by twisting the coupling on the threaded rod.
We then cleaned out the extruder this was done with a small piece of flexible wire bent in to a long U shape. The extruder was then heated up to temperature. The extruders idler was then removed and the hobbed bolt was cleaned. The thin wire was then inserted down the extruder. The extruder was then turned off and left to cool by 20°c. The wire was then removed from the extruder. This process was repeated several times. Once we had completed that we reassembled the extruder and pressed print. It worked just as new!
We also had a discussion about Festival of the Mind 2014, the themes for next year are:
We talked about doing something along the lines of hacking and maybe some Arduino projects, but they were only things that we drafted up at the meet up. If you can think of any other ideas regarding Festival of the Mind 2014 then let us know on Twitter @SHHMakers or our forum.
3D Printing in Sheffield
We only recently found out about a company called ‘We Do 3D Printing’ who are based in Sheffield, they sell items and components for 3D Printers. The company has a online shop set up on eBay. Because of where Sheffield is located it is an ideal focal point for collaborating on projects as well as having places to use 3D Printers and Laser Cutters.
Next Build Day
We now have a build day planned for the 14th of December between 10am to 4pm. You can bring along your projects, get advice from other group members and have access to the Refab Lab in Access Space with the Laser Cutter, CNC Router, 3D Printers and more.
Let us know if you are coming ether by our forum or on Twitter @SHHMakers.
On May the 9th of the November the Sheffield Hardware Hackers and Makers participated in the Maker Day at Sheffield Hallam University. In this event we had three 3D printers, one of which was the SHHM’s Mendel 90. We also had a large collection of small projects that members had made (including a Geiger counter). As well as one or two Raspberry Pi’s. On top of this we had some Arduino projects witch featured some RGB LEDs.
The three 3D printers that we had on display in the picture above where (from left to right): A Reprap Huxley, a Reprap Prusa Mendel and a Mendel 90. The Mendel 90 was being driven by a Raspberry Pi. The Pi had Print Run installed on it, the open source software for driving 3D printers with. This allowed us to have full control over the printer just as you would if you where using a computer. The slicer settings still needed setting up on the Pi, but you can still take a look at the time laps below.
The printer was printing a small Android fridge magnet test piece.
This 3D printer being driven by the Raspberry Pi, called a “Mendel 90″ was built at a event called “Festival Of The Mind” this took place over two days on a weekend where 5 of these printers where built.
The selection of projects that members had brought along to the maker day included: A Geiger counter, Arduino controlled egg incubator and Arduino controlled ambient lighting. All of these kits had been made from scratch by group members.
We also had another Raspberry Pi set up with Scratch on for people to play on and learn.
The next group meet up will take place on the 25th of November at Access space. New members are always welcome! For more Information on meet up’s and the group you can visit our Forum
Or alternately you can follow us on Twitter @SHHMakers
This meet up on the 29th of July, we had a man from BBC Radio Sheffiels come in and interview people about 3D printing. This was to try and get an understanding of what 3D printing is, how it works and how it has progressed over the years.
It was broadcast at 6:50 AM and in more detail at 7:30 AM. The show is available on iPlayer.
The 6:50 AM part is available hear at 1 hour 50 minuets.
Then the 7.30 AM part is available hear at 1 hour and 3 minuets.
The Sheffield Hardware Hackers and Makers group have a build day on the Saturday of each month, and a evening meet up on the last Monday of every month. There will be no meet ups or build days in August because Acsess space is closed. Normal meet ups and build days will return in September.
At this months meet up of Sheffield Hardware Hackers and Makers we have had Laser Cutting, 3D Printing and more
With the laser cutting a sign was cut out that said “Sheffield Hardware Hackers and Makers” this sign was made to put over where the 3D printers where. The sign had the text engraved on to the wood and the word Sheffield was cut out over the engraving.
The sign being cut out
The finished product
The 3D Printing
With the 3D Printer we printed a small android logo. This was from a Gcode file, This was used as a test piece. In total Access space has three 3D Printers. It’s own, and the two that the maker group brought over. Meany things have been printed on this printer, things like parts for other printers.
The setup of the 3D printers and one of them printing
The print close up
In total the print took around 18 minits to print.
However, it seems that the construction of the main ramp was a little lacking. I’m not sure who thought that a fixing involving screwing this fine screw thread into fibreboard could stand up to vigorous play, but it turned out that it couldn’t:
Noah and his ark came to the Sheffield Hardware Hackers meeting on Monday 29th April to see what could be done. The fix was to use the Access Space drill press to drill out the holes in the ramp itself to the maximum depth a 3mm drill bit could manage (they didn’t quite meet in the middle), drill through-holes in the ark sides, and replace the small threaded rod pieces with some 3mm rods scavenged from the laser movement assembly of a couple of old DVD drives. (Thanks very much to A.J. for his help in drive selection and destruction, and to James Wallbank for pointers and safety advice.) The first DVD drive only had one, but the second turned out to have two (old hinge in picture for comparison):
Once the ramp was drilled, we also had to glue back on the split pieces. Fibreboard doesn’t glue back into place very well because it’s a compressed material, so additional compression was required to get even a vaguely passable result. Some IKEA packaging offcuts were wrapped in clingfilm to prevent them being glued on by any excess glue:
And it was judged that, even after that, a layer of clear strong Duck Tape was necessary to keep the assembly from splitting again. There’s only so much you can do with medium-quality wood:
The rods fitted well using only a friction fit, but needed Dremelling down to the appropriate length:
Having done that and refitted the rods, Noah was ready to load the animals two by two:
This week on the 25th of march was our third meet up of the year. This month a number of things took place.
- Whats been going on/admin
- What projects people are getting involved in
- Set up of mendel 90 3D printer and installation of software
- 3D Printing
- Laser cutting
One of the first things that took place was the set up of the mendel 90 and the installation on the software. A computer and place
were kindly provided by access space. Print run (https://github.com/kliment/Printrun), Arduino IDE (http://www.arduino.cc) as well as
one or two overs where the programs that where installed. After a bit of tinkering we got the printer working.
There was also the laser cutting, a fan plate for the coffee can filter (more to follow on this) was cut. This was the final version that was designed using ink scape. The fan plate has a 150mm diameter, a hole for the fan, screw holes, and space for a 16mm cable gland.