You can drill titanium even with a regular HSS metal drill bit. Heat can easily degrade a regular drill bit so use stronger drill bit types. Titanium does not conduct heat as effectively as other metals so place cutting oil to prevent overheating. Recommended drilling speeds & feeds for titanium (6AL4V) : Continue drilling till the hole is finished.
Slow down your drill and apply moderate pressure and apply cutting oil. If the drill bit is already dull sharpen or replace with a new one. If the bit starts shaking and the metal shards stop coming out, stop drilling and check the drill bit to see if it is still sharp. Make sure metal shards escape the drill hole. Use moderate speed and pressure on the titanium alloy you are drilling. Determine the exact location of the hole. Clamp the object you want to drill to a stable surface and use a spare piece of plywood underneath to support the portion you are drilling. It is quite similar to drilling stainless steel since you need moderate speed and pressure for both materials.Ĭarbide drill bits are the best for titanium, but in case they are not available, you can also use a titanium coated or cobalt drill bit. However, with the right technique, speed, and drill bit type, you can successfully drill a hole in titanium. It'll do 95% of what a set of cobalt bits will do at half the titanium can be more challenging than drilling other metals, due to its innate toughness. automotive use).If you want/only need one set, I'd just get a good HSS set. Why risk it?I've got a dedicated cheap set for household use that I probably paid $30-40 for, a set of Cobalt bits for metal use, and a set of left handed bits for bolt extraction (ie. There is always the possibility that the wood would remove the coating from the bits. Why ruin a nice cobalt bit when you can use one meant for actual ceramic/glass cutting?quote:Also, can I use a Cobalt bit for drilling wood? Or should I stick with a standard HSS bit for wood? Once again, you can, but I wouldn't. There are special spade shaped ceramic/glass bits, and they're pretty cheap (~$3-5 or so). Quote:Originally posted by anak1:Can a cobalt steel bit drill through ceramic? Say.1/4"? It can.But I wouldn't use one for it. It sounds simple, but most people don't do it.Matt. 
Apply just enough presure for the bit to work, any more than that and you are dulling the cutting edge of the bit.
Let the bit do the cutting, not pressure. It keeps the bit cool and prolongs the life of the bit.
TITANIUM CARBIDE DRILL BITS HOW TO
Learn how to use a bench grinder, or even better, a drill doctor (but get one of the higher end ones that will do split points).3. Most drill bits aren't as sharp as they could be, even out of the packaging. Ran ~$180 for the set, but the bits are warrantied for breakage, so as long as you keep them sharp it's a reasonable investment.2. I bought a set of bits (1/16 -> 1/2 by 64ths) off one of the tool trucks at work. Cobalt is best, but a good HSS bit is fine if it's from a quality source. Between fabbing stuff 5-10 times a day for the trucks at work, and general use (drilling through firewalls, extracting stuck bolts, etc), I use my bits pretty much everyday.
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