Home made hand control pneumatic graver and engraving setup

This is my version of a home made engraving machine and my take on a hand control pneumatic handpiece for engraving. I have Shaun Hughes to thank for a lot of the ideas. Pretty new to this whole uploading thing so bear with me with video and audio. Loads to work on. I never mentioned the optional tubing but I'll make a comparison between the tubes if there's interest for it. Also, "there's some oil on it" and "I don't oil it"are actually both true. I don't oil the piston intentionally but it might be that the residue from the compressor helps keep the piston in shape as well. Feel free to ask if you have any questions!