good set of burrs for die grinder (1/4 inch) - Page 1
Forum section: electronics / general

author: coppercone2
author_rank: Super Contributor
timestamp: June 13, 2019, 03:25:13 am
content: https://www.factoryauthorizedoutlet.com/products/ingersoll-rand-814tin-9pc-titanium-super-cut-carbide-grinding-burr-kit-ir814tin?CAAGID=42179799592&CAGPSPN=pla&CATCI=pla-365468509117&CAWELAID=829717688&gclid=Cj0KCQjwxYLoBRCxARIsAEf16-udbpto8K_Nv3F9LFtfdjB7uHpE1TfVz3u3lmO60qWULk9r0ygJYSsaAp5LEALw_wcB&google=1Is this considered a good deal?

author: KL27x
author_rank: Super Contributor
timestamp: June 13, 2019, 03:47:02 am
content: $116US for 8 quarter inch burrs? That is a great deal. If you are buying for the government. From a company owned by yourself through shell corporations.I have seen set of 4 or 5 generic 1/4" burrs for $14.00. Carbide stuff, in general, is pretty good to gamble on, IME. The cheap imports tend to be pretty good.My set of 5 was under $10.00, because I located a 6mm collet for my grinder. The metric stuff tends to be cheaper.

author: coppercone2
author_rank: Super Contributor
timestamp: June 13, 2019, 03:51:29 am
content: I was worried cheap carbide would explode or something

author: KL27x
author_rank: Super Contributor
timestamp: June 13, 2019, 07:28:50 am
content: Serious safety note, be careful grinding steel with a carbide burr. It will throw sharp shards of steel the right size and shape and velocity to be annoying and dangerous. Small enough to bounce off the side of your nose into your eyeball despite wearing safety glasses. Large enough to instantly demand your full attention if not necessitate a trip to the ER. They're also a good size to sink into your foot if you step on them and will embed themselves en masses into a T shirt.

author: coppercone2
author_rank: Super Contributor
timestamp: June 13, 2019, 12:01:13 pm
content: I figured thats a good reason why not to buy the milwakee one without a safety switch on itwhat do people wear lawrence of arabia motorcycle goggles using this thing?

author: Psi
author_rank: Super Contributor
timestamp: June 13, 2019, 12:04:27 pm
content: Quote from: KL27x on June 13, 2019, 03:47:02 am+1 for this.I got a few different sets from Aliexpress, most of them worked quite well. And much cheaper.That said, i don't really want to recommend putting china bits onto your die grinder for obvious reasons.While some are good others are not.

author: KL27x
author_rank: Super Contributor
timestamp: June 13, 2019, 09:51:35 pm
content: My experience is that solid carbide bits are probably gonna be good down to the bottom of the barrel, except that endmills might be remanufacturerd/sharpened and be slightly smaller than the normal dimension.OTOH, if you buy bits made of steel, or router bits that have carbide inserts, the stupid cheap stuff becomes garbage. If it's cheap enough, you might still get a good bit out of the bunch if you buy 3 of them. Some will be ok, and some will be junk.I am guessing carbide bit manufacturing has a lower failure/loss rate. I've also heard that carbide bits have high scrap value for the actual material, so maybe they just recycle the failures. Melt them down and try again.QuoteI use the FFS.

author: coppercone2
author_rank: Super Contributor
timestamp: June 13, 2019, 11:35:51 pm
content: I thought the carbide would need to be ground down and resintered?it melts?

author: KL27x
author_rank: Super Contributor
timestamp: June 14, 2019, 02:36:45 am
content: They do something with it. I would think they have to melt and separate and purify the different stuff in it. Then put the different powdered ingredients together in the right sizes and ratios.

author: coppercone2
author_rank: Super Contributor
timestamp: June 14, 2019, 03:53:05 am
content: that dewalt die grinder is a beast. Seems way more stable then a dremel but I need to get carbide burs (just tried it with alo2)Almost want to measure its rpm, it does not sound like you would think something should sound at 25krpm (more like a BRRRR then the dremels squeel).

author: KL27x
author_rank: Super Contributor
timestamp: June 14, 2019, 04:46:40 am
content: My Dremel sounds obnoxious, most of the time. Every once in a blue moon, the bit will seat just right and it will be a world of difference. Mine is single speed at 35K, though. My die grinders run circa 27K.

author: coppercone2
author_rank: Super Contributor
timestamp: June 14, 2019, 09:03:10 pm
content: yea the real die grinder is not nearly as whiny

author: coppercone2
author_rank: Super Contributor
timestamp: October 24, 2019, 01:31:19 am
content: got a high quality radnor burr on 1/4 inch die grinder. Wow, destroyed it pretty quick (you really need to be very meticulous with these) but it still 'works'. But the nice reentry cone is chipped.. remove 'bouncy' obstructions first with a mean stone then use this to polish it.The filings are very sharp (seems to be dependent on size, the dremel is not so evil with its carbide bur).With the 'skill' of my interior corner welds though... not the tool for the job.. also the dewalt die grinder is not very battery efficient for doing these long welds (~2 feet interior). this is a SLOW process compared to traditional grinding..Damn making boxes is a BITCH.

author: coppercone2
author_rank: Super Contributor
timestamp: October 24, 2019, 01:50:34 am
content: is there some kind of beating process where you can take a interior weld, lay it in a 'v-block' heat it up hot and smack it with some kind of tool to make it nicer without all the removal? is that a blacksmith process that exists? i probobly have filings in my balls already

author: duak
author_rank: Super Contributor
timestamp: October 24, 2019, 03:48:58 am
content: If you think steel is bad, stainless steel is worse. For some reason, the chips are like little needles.If you're grinding something that's sticky like some aluminum alloys and some types of stainless, a little bit of light oil on the burr helps keep it from loading up. It doesn't lubricate the burr so much as keep the soft metal from clogging the burr.You can remove aluminum from carbide burrs and end mills, some HSS end mills and drill bits by soaking them in sodium hydroxide (lye). Some degreasers contain NaOH. One brand here is 'Duke'. It takes a little while, but after the cleaning the cutter is less likely to clog.Check the die grinder manual to see how many hours the brushes are good for. Apparently the older ones were lucky to get 20 hours. Not surprising considering the RPM and current. If it ever starts stuttering or running slow, stop and check the brushes.

author: eKretz
author_rank: Frequent Contributor
timestamp: October 25, 2019, 04:16:14 am
content: Carbide burrs produce some of the worst detritus of any machining or grinding process. The little slivers will get everywhere, including into your skin and under it. If I am going to be doing any serious work with a carbide burr I usually wear a face mask, a zip-up jacket and gloves - with the gloves checked for holes and then after donning them duct taped all the way around to the jacket sleeves. I also make sure that my boots are laced up tight and my pant legs are fully over them. I have been picking out those damnable slivers for 20 years.If you need to use a burr on aluminum, get the ones made for the job. They have much wider spaces between teeth and the gullets are rounded and smooth to promote easier chip flow. It helps a LOT to run at a bit lower RPM in aluminum also. The light oil can help as well - even something as simple as WD-40.

author: alpher
author_rank: Frequent Contributor
timestamp: October 25, 2019, 08:59:35 pm
content: Not the cheapest, not expensive either.http://www.sowatool.com/Use them all the time, decent drillbit assortment too.

author: coppercone2
author_rank: Super Contributor
timestamp: October 26, 2019, 02:12:02 am
content: Quote from: eKretz on October 25, 2019, 04:16:14 amGlad I did not buy the whole set! most dangerous tool I have by far it looks like. Think I will vacuum the entire garage. I found one on the back of my leg and two in my arm, after 30 minutes in the god damn shower. Took 12 hours before I felt them. Feel like I am dealing with a radiological disaster or something LOLI want to make a vacuum cleaner attachment, but the whole point is to get into difficult areas (or you can use just plain old grinding disks otherwise)........btw, you might want to wear a hood. I found them in my hair too. I wonder if you can make some kinda terahertz scanner to ring if they are on/in you

author: KL27x
author_rank: Super Contributor
timestamp: October 28, 2019, 06:52:48 pm
content: Hair? No worries. That's just extra crunchy dandruff.I think a nylon windbreaker might be a good idea, though, so you hopefully don't have to change your shirt after a small job. For large jobs, it don't matter. You're gonna have to shower and wash all your clothes or you will be itching the rest of the day.It's much too hot where I am to wear leather grinding aprons and such. Trying to gear up like eKretz described could be the last great idea you have before you pass out and die in your garage of heat stroke.