Tools – Page 2 – Tog Hackerspace

21/05/201721/05/2017

TOG Calibration

If you work in industry or business, you probably have your electronic test gear and multimeters calibrated regularly. If you’re an amateur you probably don’t. We don’t have a fancy calibrator at TOG which can cost 1000’s and need regular calibration in itself. We do however have a 2 Euro voltage reference based on an Analog Devices AD548 voltage reference. Checking some of the multimeters that we have around, and the results are surprising.

The reference outputs 2.5, 5. 7.5 and 10V. Now this is a bit of a crude test, because this little reference is not calibrated or traceable to any standard. If you assume however that the voltages it gives are “exact”, a 20 year old Fluke multimeter is reading almost perfectly . Some other multimeters that we checked are a bit off, but still not too bad. We’re going to check some of the ultra cheap meters that we have too.

Fluke 77: 2.499, 5.00, 7.50, 10.00
Standard ST-3343 Clamp Meter: 2.495, 5.01, 7.51, 10.02
Velleman DVM890: 2.47, 4.96, 7.44, 9.92

25/01/2017

Workshop Improvements

We have been improving our workshop a lot lately. Check out some of the work below.

We have found a new home for our air compressor and mounted it on our metal shelves. We also mounted a air hose reel. It makes using air tools in our workshop very easy.

Label all the things. If you have a lot of stuff, soon you find yourself in a situation where you can’t find anythings. We have done a big sorting job of our stuff. So now most things have their own box.

We have long things like pipes hat need to be put somewhere but they don’t fit in our current wood storage area. Long things now have their own area . aka Long things storage.

Drop by our upcoming Birthday Party to see a host of changes we have made to the space since our opening last year.

01/11/201612/05/2018

First cuts with TOG’s DIY CNC router

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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”

22/08/201623/08/2016

More lathe work

Our lathe is finally getting some good use! This time, a small part Hose adapter - work in progress was made from aluminium, a coupling for connecting two pieces of tubing for the water cooling system in the upcoming CNC router project. It will replace the existing temporary hose-and-clamps hack.

A piece of bar stock was clamped in a 4 jaw chuck, made into a cylinder and turned down to about 16mm diameter. Next we turned half of it down to about 6mm and drilled a 4.5mm hole through it, using a drill chuck. Lastly we smoothed the edges slightly and parted the whole thing off.

The end result is more f It fits! unctional and looks a lot better!

The whole operation went smoothly in overall retrospection. However, we had few small issues to deal with on the way. Firstly, it wasn’t obvious how to set gearing for the power feed, as the manual wasn’t very clear. Another problem was that the square shape of stock, required the use of a 4 jaw chuck, which is not self-centring. That adds a couple of extra steps to set up, as centring of the stock has to be done manually in such a case.

21/06/201624/07/2016

Lathe up and running

lathe Last night we had our lathe up and running for the first time since we moved to Blackpitts. We were using it to centre-drill some rollers that are part of a 100 year old mangle. One of our members is restoring the mangle to use as a printing press. Keep an eye out here on our website for details of the project.

If you’d like to take a look at the lathe, drop in sometime. The other major piece of equipment that we are almost ready to restart is our laser cutter. We’ve already had the laser firing and are working on alignment. Watch this space.

29/05/2015

Fixing TOG’s drill batteries

TOG’s drill batteries were on their last legs. We were barely getting a few minutes of use after a charge. Time for some new batteries. Two new batteries were almost the price of a new drill, so we looked at buying a brand new drill. There was nothing wrong with the old drill …. just that the batteries were bad.

After a bit of searching on the ‘net, a set of 12 new cells was on its way to TOG for just €15. The battery pack was opened up and the old cells removed. The new cells were fitted with the same layout. Lots of pics here. After reassembly, the battery charged fine and the drill is back in action. Just need to do the second battery now.