Making A Pneumatic Graver
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- čas přidán 24. 07. 2019
- Welcome to My Bench Jeweler. I took a few days off from working on the Graver. I had a guy message me on Facebook who didn't understand how the Pneumatic Gravers Worked. I did send a few links to CZcams for him, there are many good sources of educational videos on gravers. So I decided to make a new graver as my old one never did work great. I demo the new graver but really it's not any better than my first one. I don't have any way to test my graver I'm wondering if the tire air compressor is just too small?
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Rick Alexander helped me figure out the problems with my graver build. The pedal which I bought from ebay for around 15 dollars had a bit of play in the top of the pedal I put a .030 brass shim on the pedal and glued it in place above the value button so now I have full control of the value and it depress to give the graver full power it works nice. Many Thanks to Rick his channel offers a lot of info. Now back to making the air-graver.
I started playing around with this as well I use a 12v compressor did not get much power out of it either, yesterday i got my motor speed controller to slow the compressor down it feels like it has way more power now you can actually feel the piston striking the graver now and not just the high speed vibrating
I think a lot of problems with my machine was the workmanship. I didn't take the time for machining to tolerance. I'm thinking about making my own pulse compressor so that it can be installed in a cabinet however all in the thinking plans for now.
How long is the tubing you are using? I try to keep it as short as possible, air compresses so less tubing is less air to compress.
The tire inflator I'm using has a; Bore = 1.183" Stroke = .500" Volume =.5496 Cu in. I'm very happy with the way it works.
Is this pulse or oscillation? If your trying to make a oscillating airgraver I would imagine it's more difficult due to balance. If you drill a hole in the top of the piston and on the sides of it leave very small space to were air won't get trapped but enough to make the piston go back and fourth on it's own. When there is enough air pressure that cant escape through the vent holes the piston will go up and come back down. This is very important and takes patience because you must figure out the correct balance of the piston. Even the high end Lindsey airgraver won't function correctly if the pistons are not balanced correctly and the venting ports are not drilled to the right diameter. People are having more success at pulse airgravers. Check out Shaun hughes!
In the past year, I have built both pulse and oscillating gravers. I have not had much luck with the air graver or piston-driven. It will oscillate but not the way a Lindsey graver works.
@@rhjgold but your close to the finish line my friend. You will be engraving soon!👍
What would you charge me to build me a shuttle style hand piece? I know what your talking about! I don't wanna engrave coins or jewelry doing motorcycle and car parts spring feels weak not enough punch! I've tried almost everything to get more punch out of the spring style!
I built 5 power gravers with the help of machines in Florida. I started building them from scratch but ran into some problems making them. I have since figured out the problems, the gravers have plenty of power it's just finding the time to make all the parts.
Your hose is way to long. Also you need a speed control on the compressor. Then it will cut like Mad. You need to control the compressor speed and play with the spring size. Most important