Diamond drag bit

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milo30
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Diamond drag bit

Post by milo30 »

I finally tried my diamond drag bit today. I had bought a blank bangle bracelet and it engraved some letters on it pretty well. I had an old mirror so I tried engraving that. It was doing well but after about 5 minutes I evidently lost the diamond tip. The engraving got shallower and then stopped engraving all together. Thinking that it was a z height issue I reset the height at that point and still no engraving.

I had used it about 15 minutes total. How long do these tips last? Anything in the engraving process to watch out for that would make it break? Replacement tips are like $20 a pop so I expect more use out of them than that

Maybe I just got a dud or is it common?

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highpockets
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Re: Diamond drag bit

Post by highpockets »

I'd contact the company.
John
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milo30
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Re: Diamond drag bit

Post by milo30 »

I bought almost a year ago on ebay. Not even sure who makes it

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Xxray
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Re: Diamond drag bit

Post by Xxray »

Tips last near forever, breakage is for sure possible if going over rough texture or if you slipped off an edge of the project then went back on. If you did neither then you must have had a dud, is it possible it just slipped up into the holder ?
Doug

milo30
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Re: Diamond drag bit

Post by milo30 »

No the tip is missing. It didnt do anything abnormal duringbthe engraving so I probably just got a dud. Thanks for responding and letting me know that they should last. I will oder another and see how it goes

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Xxray
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Re: Diamond drag bit

Post by Xxray »

"Missing" ,so are you saying it might have slipped out or have you found shattered pieces of it so you know it was destroyed ?
Doug

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Re: Diamond drag bit

Post by milo30 »

I didnt see any shattered pieces but I blew the piece off with air while it was engraving. It just went from scratching the mirror very nicely then began the etching began to look lighter and the next area it did nothing. You could see that it was still being pushed into the holder so it was making contact with the mirror.

I am going to order another insert. If they normally last then I don't mind it. If the life span was normally that short then I wouldn't want to spend that kind of money for such a short use.

Ive had it for about a year so maybe I dropped it at some point or it was dropped in the mail or possible just got a bad one. It was working just like I had hoped up until it stopped.

I zeroed it to the surface with the bit slightly compressed and used .1" for the pressure in vcarve and was running it at about 50ipm. I know you do a lot of work with them. What kind of feed rates are you using?

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Re: Diamond drag bit

Post by KMoffett »

Tried to scribe on a piece of granite. Sheared the point off the diamond. A very close look at the granite's surface showed a lots of tiny pockets. Won't try that again. :(

milo30
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Re: Diamond drag bit

Post by milo30 »

Really? I watched a video of someone using a drag bit on granite and I thought about trying it. I think that I'll pass then.

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Re: Diamond drag bit

Post by milo30 »

Unfortunately, I bought it on ebay and it won\t show the seller and can\t click on link any more to see what brand it was to buy another insert. I see some on Amazon for sale that look the same. I am wondering about if most of the generic ones are interchangeable.

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Re: Diamond drag bit

Post by KMoffett »

Post a photo of the diamond drag tool.

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Re: Diamond drag bit

Post by milo30 »

I found it. It is RZB bit. I found the inserts for it. Thanks

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Re: Diamond drag bit

Post by milo30 »

Desktop version of ebay gave me more info than the mobile

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