I've been working on my cars suspension and one of the bolts is seized and broken.
Been trying to drill it out with cobalt-steel drill bit but it just doesn't bite even with cutting fluid.
The only progress I've been getting was from a diamond dremel bit, but it wears down fast and is still too slow for me.
Can I use tungsten carbide burrs on my dremel to drill/cut out a stuck bolt?
Are burring bits good enough to drill/cut stainless steel with a dremel?
you could. dremel take forever tho. id use a cuttoff wheel in the dremel and cut a few slots in the head and then take a cold chisel to it to try and break the rest of the head off. deal with the remaining threaded piece sticking out after you remove part. good luck.
>Are burring bits good enough to drill/cut stainless steel with a dremel?
Depends on what you consider "good enough", especially time-wise. And they have to be good quality burrs, lots of chinkshit "carbide" that melts on anything but mild steel.
I am looking at Bosch (dremel) tungsten carbide bits
A prick punch to dimple the center then a center punch then a pilot drill is my other fave method.
Oxyacetylene is the only choice.
Not an option due to the wiring being very close.
There are often safe ways around that. Small heating tips and wrapping wiring or hoses with WET cloth with sheet metal from a cut up metal can is one way. Wood (not pressboard, wood) also works because it takes time to burn and if soaked beforehand even more time. A small heating tip is my preference but if the bolt is broken flush then skip the torch.
Post clear pic because that matters. You have a phone and a PC of some sort.
>There are often safe ways around that. Small heating tips and wrapping wiring or hoses with WET cloth with sheet metal from a cut up metal can is one way.
What is WET cloth? Would the hardware store have it or would i need to go to a welding store?
>warm enduring tissue
basically it stops the heat
Post pic of bolt and adjacent area.
Why not use something really really soft.
What I am talking about is electro chemical machining
or chemical machining.
I think, having a mild jet of diluted copper sulfate going into the hole in a controlled manner will clear it.
In a garage enviroment?
I am looking for more realistic solutions
Also an update:
Tungsten is working well and was able to get the nut out
Done exactly this with a die grinder. As others said buy a good bit. Something made in USA, never buy chinesium carbide anything. They will eat the bolt like butter.
op one thing to keep in mind when drilling stainless steel is that it work hardens very easily. so if you drill at too high an rpm you will find that it starts off going through and then seems to just go nowhere no matter what you do. you have to drill very slowly and with lots of cutting oil. otherwise even a tungsten carbide bit won't help you much.
Whats a good type of cutting bit for plastic? I bought one of those cheap ass WEN rotary bits sets and its a wild value for all you get but theres zero explaination for what anything is or what it's for