Does anyone have any recommendations for some very good, high quality spot weld drill bits?

I use conventional steel bits but would like something neater, faster and stronger. I am starting work on some rare datto's so would appreciate some quality tools to do the job super neat.

Prefer suggestions from experience.

Try www.eastwood.com they sell specialty tools for restoration work. They are expensive compared to regular drill bits, but they work. http://search.eastwood.com/search?p=R ... and&isort=score&view=grid

Be aware that there's a trade off between toughness and hardness with cutting materials. A harder/ faster cutting tool (spot weld, lathe, drill whatever) is often more brittle and more likely to break under shock.

If you can get a tungsten carbide drill bit it'll be hard as and be able to cut fast but once it's blunt or chipped you'll likely have to throw it away. If you can sharpen them yourself I think you're best off with a good quality high speed steel (carbon steel), especially if you're drilling with a hand drill.

Have a look at sutton tools, they have a decent rep. My Dad's (carpenter) still using sutton drill bits that are at least 20 years old. Their factory is just around the corner from my house to.

good auto paint supplier,i got mine from VG paints GIRRAWEEN NSW. works great.
approx $30.

Another tip, keep them cool when drilling by using a slower speed. They have a fine cutting edge compared to an ordinary twist bit and can over heat and lose its edge easily.
We used to use the wurth brand in the panel shop.

I would highly recommend this specific type of drill bit, brand i couldnt tell you. I have heard nothing but good about these bits, and i brought one myself was awesome, as Simon said, keep them cool and drill on a slow speed.
There was only really one thing I found could have been better with this bit, it was rather short (perhaps for more strength, i don't know) so for example when I was drilling the tie hooks on my ute tray, it was a little tight, still worked with a bit to clear but tight....
http://www.shoptoolsforpros.com/media ... ill-bit-dent-fix-1610.jpg



I havent had experience with these drill bits myself, however when i did the research on a spot weld drill bit there was nothing but comments on short lifespans and braking chipping teeth...
http://forums.rennlist.com/rennforums ... val-tool-advice-95343.gif

I use Wurth brand Wurth. I used to make my own but the wurth ones out last most others. but any cutting bit will go blunt Quickly if you are too aggressive. OAN878 may have some ideas aswell i'm pretty sure he uses them daily in his job.

Thanks for the fantastic response, I will probably go for all of them and give them each a run to see which is best. I use cutting oil on just about everything so I'll be sure to keep them slow and cool.

I suppose the recommended rpm range will be specified on the package.

the wurth ones are certainly very good, so too are the snap-on tools variety.

A $2- water spray bottle is also a good investment for keeping drill bits cool. I use one for certain tasks. Water's great, dirt cheap (~$1/tonne in Melbourne) and exceptional cooling capacity.