Our friends from FiDi came for some help with metalwork before FiDi 49. They were making a table-top jet engine – at Technarium they used HCl to clean a piece of tin, then welded and polished their part.

Here are a couple of jet engine tests at the oldest hackerspace in Vilnius – the FiDi basement:

The engine was a partial success: when the right mixture of fuel was loaded, it ignited (a spark plug was not needed). Unfortunately, the air intake did not work due to bending or welding defects.

At FiDi, they used a compressor to remedy this – the engine worked fine, invited lots of attention and provided much joy to the participants.