Back in our Chancery Lane days we made a very successful pizza oven. It became a regular feature of our monthly Open Socials. In late 2015 we moved to our fantastic new space in Blackpitts. One thing we don’t have in Blackpitts is our own dedicated outside yard. We can do things outside, but it is a shared car park so we can’t leave things out there. This means that we’ve had to build our oven every time and take it down again, for special occasions like our annual birthday party or summer post-Dublin Maker BBQ.
So its been on the to-do list for some time, to make a portable version that we can wheel in and out as required. We started the process yesterday to build a molded dome from lightweight concrete. There are lots of plans on line for this using a gym ball as a former. We’ll be working on it over the next few weeks. Drop in and have a look.
Once upon a time, TV repair shops were everywhere. Now there are hardly any left. There are reasons for that, probably based on a mix of cost, reliability of electronics, and a throw-away culture. Even in the few TV repair shops that are left, would anyone actually take a scope, schematic and a soldering iron to a TV these days? Maybe they would just replace the circuit board or display.
This is a tale of a Sanyo TV, made in the UK in ~1992, based on the date codes of the components inside. It has worked continuously since then. Lately the picture has gone a bit red-ish. The TV was recently replaced by a new flat screen TV, so we’ve had a chance to take a look inside. This is the first time that the back has been off since manufacture….. ~25 years ago. Depending on your point of view, you might think that 25 years isn’t that long, but it’s not too bad either for a CRT-type TV, considering also that it has never needed a repair. If you have some other electronics that has been working without repair for a very long time, we’d be interested to hear.
Inside it is remarkably clean. Apart from the one on the tube, everything else is on a single circuit board. If the tube is not the cause of the reddish picture, then this TV is probably repairable. Some further investigation is pending. If you’d like to take a look, drop into our regular Electronics, Microcontroller and IOT evening which takes place every 2nd Monday.
Last October, our own Jeffrey Roe visited Radiona, a makerspace in Zagreb,Croatia. While their he gave Skull Radio workshop and hung out in their space. As a thank you, we decided to make them a new sign for their door. Taking a raster image from the Radiona website, we turned their logo into an SVG and made a sign. We went for a raised lettering effect with 3mm Plywood and using CF glue to stick the letters.
For photos of the build, check out our gallery.
A video of the sign being cut.
Check out some photos of Radiona in our gallery.
Last month Tog hosted Science Hack Day Dublin. A weekend where 80 makers took over the space to build all sorts of projects. A group of Tog members got together to make a home made vacuum former.
The idea came about while chatting on our IRC channel about what tools we should add next to our workshop. As just recently a got new CNC , we where looking for something we could build in a weekend and we landed on a vacuum former.
Starting off on the Saturday of the Hack Day, we formed a team to bring our idea to reality. After checking out some YouTube videos we formed a basic design.
Once we had the design, we slit the team up into three. One worked with the laser cutter to make the box. One worked with the CNC machine to make a frame to hold the plastic. Final the person worked with our electric oven to figure out the settings to melt the plastic.
Someone had the idea of drilling the holes by hand on the top of the box. Such a waste of time. So many holes we should just have laser cut them.
After a few hours all the parts where ready for our first test. It did not take us long to think of what our first object should be. A video of the inaugural us of the vacuum former is below.
Check out our gallery for photos of some of the things we have vac’ed.
Parts We Used
- Cookworks Mini Oven
- Lasercut Box (Download our design here)
- CNC Frame (Download our design here rename to .dxf)
- HIPS Plastic
A few months ago we’ve mentioned a DIY build of a CNC router. The project turned out to be more complicated than we anticipated. The steel-based construction is not very forgiving, and the large size of the machine doesn’t help. Still, due to all the help from many members we managed to overcome a number of difficulties and do a few test engravings in MDF.
MDF is not a difficult material to mill – the most noticeable problems are the awful dust and the fluff around the edges of the cut. The furry edge is easily fixed using sand paper, but the dust will probably require some more drastic measures in order to protect our lungs. Eventually we’re planning to cut and engrave a variety of materials, many of which have interesting properties but are incompatible with our laser cutter.
Visit us during one of our Monday CAD nights to see the new machine in action or in the video below.
Continue reading “First cuts with TOG’s DIY CNC router”