Sanding/Polishing Titanium

Joined
Jul 19, 2023
Messages
31
Hello,

First off, I am relatively new to sanding/polishing. I recently purchased a ti prybar (https://a.co/d/gI1gfQv) and I took it upon myself to try and sand/polish the finish off of it to try my hand at some basic anodizing. I have sanded and polished the clip on this thing numerous times following what instructions I could online, as well as using a couple different polishes, but it keeps coming out with a "speckled" pattern in the metal, or another way to describe it would be almost a micro nylon weave, almost like what you would see on a windbreaker, but much smaller. I have sanded it down gradually to 1200 grit using my dremel on the slowest rpm setting (5000rpm, but given the extension cable I use it actually spins a decent bit slower than that). I would take pictures of it, but no matter how I angle my camera I can't get a good shot of it to explain.... essentially it looks more scratched than anything. Are there any methods anyone knows of for sanding/polishing small parts like this? Or could it be that the clip itself is some kind of different titanium than the main prybar itself? (I wouldn't know how to check for that though). Any assistance would be appreciated!
 
Also, given that this is a knife thread, I have attempted the same thing with some other titanium knife clips and the exact same thing happens, this one just happened to be a prybar I was working on.
 
the phenomenon is called <micro pitting> or <pitting>. happens to the best among us. try to google it or youtube it. afaik there's no foolproof recipe to completely avoid it using abrasive methods such as dremel.

you want a "true mirror" polish on flats (instead of on curveds)?

then getting there is as delicate as achieving hair-whittling sharpness on a knife's edge apex (as comparison example).

do some googling to confirm that pitting is indeed what you're experiencing
 
Dont know if this will work, but I managed to get a good shot through a magnifying glass. It does look kinda like micropitting, but it looks too uniform... As I mentioned, I'm fairly new to this so I can definitely be wrong though...
 
On a side note, if anyone actually saw the picture of the prybar I got, what would be the recommended way for me to sand out the crevices that are hard to get to, such as between the prongs at the front (near the nail puller) and the crevice running down the middle of the bar with the 3 holes? I have a fine diamond file I purchased for the outside edges, but they are not great for the inside grooves.... I tried pushing sandpaper in there since it's decently wide but it only gets the center of the channel and not the edges or front/back. I would ideally like to make this thing as mirror polished as possible (given my newbie skills) before anodizing it again, since as you can see in the image the purple I anodized the main pry bar to is dirty/matte/flawed. I find this kind of stuff relaxing so I'm willing to put the elbow grease into it if needed, but for some reason elbow grease is not helping me this time :(
 
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