If you are a good machinist and have the equipment necessary to do the job, building your engraving equipment is a source of great personal satisfaction. If you value your time, making your own engraver can possibly wind up being more expensive than buying an established companies equipment. In...
It has been a while since this design was made. From the operation diagram you have the information needed to make the graver. The graver needs the springs to maintain oscillations. My working model used a lot of air. The air usage problem was traced to problems with my 1952 vintage Logan lathe...
This is a very old thread. However, I see some faults information above. Suggestions for better/faster sanding: Start with a courser grade of Wet/Dry and apply WD-40 oil to the sandpaper. The oil will float the debris out of the grit which will make the piece of sandpaper last much. longer. Use...
gtsport,
You are the only one to respond to my Thread. I am glad to help you make a functioning Graver. Somehow, we should correspond by Email. The question is, how to trade Email addresses.
This graver probably should be called An Air Hammer as it is powerful. I have several more ideas on...
i would be glad to help you build this graver design. What do you have for a lathe? Lathe experience level? You will need a small boring bar that can bore 2" depth at a .300 diameter. You can make one 0ut of a 1/4" lathe bit. I used 5-C collets as my chuck introduced chatter. 3-C collets will...
Some popular commercial systems and Youtube versions, have a Constrictor Ring located just behind Air In inlet hole. There are several machining problems as a result of this design. The Cylinder and the Constriction Ring must be perfectly concentric. The Piston has two diameters that must be a...
Theory of operation.
The piston has reduced diameter center section. The Cross Hole is drilled in this center section which connects to the hole drilled latterly . With the piston positioned by the springs, the Air In Hole is opposite the piston's cross hole. The Air Out Hole is covered by the...
I decided that since I haven't done any engraving yet, the cost of a Lindsay or GRS system can't be justified. Building a working graver system seemed like a good idea. besides, I love to invent and follow my own path.
To this end, I invented a new simplified graver which uses a Bar-Bell...
Love of tinkering with building my own graver. There is great personnel satisfaction from designing, building and using a DIY graver. Plopping down $1,300 to over $2,000 is the quick but Expensive way to get started. I have a Lathe, Drill Mill, and purchased 304 SS rod stock for the Housing...
Help Please:
My DIY graver is coming along nicely. It starts with a tap, runs at 20#-60# air pressure with 40# being about the optimum. The Tube Housing is a straight tube, no Constrictor Ring. The Piston is located between two soft springs. Start at 20# give it a tap and it vibrates without...
I take great pleasure in inventing tooling that may possibly work equal or better of best the big guys equipment. After all, in their beginning, they too worked out their designs trial and error, learned from their failures and successes and proceeded to received patents on their designs.
For a...
Lindsay Patent US6095256A officially "Expired - Lifetime" on 2020-01-19. So, information from this patent is now in the public domain, free to use for everyone for the last 10+ months.
I am trying to find out how the graver made by JKeper used so little air per his comments.
I have worked...
I need your help to understand how your graver uses so little air. I have made several copies of the Lindsay air graver, they run well but drain my sir tank quickly. The piston is a very tight sliding fit. With the piston full forward no air enters the graver. With the piston back so the rear...
I have been trying to make about the same type air powered Graver. My air consumption is terrible. I tried making the piston fit as perfect as possible by sanding it down to a perfect fit. You mastered the air consumption problem, can you give more details please.