How to drill out a broken tap | drill out a broken screw extractor

in a previous video I demonstrated how to use one of these which is a guide that I've used from a bolt by drilling a hole down the center I will put a link in the description to that video and also the video on how to make one of these guides this video have got a bolt which is shared in this hole and what I'm going to do is I'm going to shear off a tap in there and then we're going to try to remove the sheared tap I'm now going to put the guide in which I've made then I'm gonna tighten up the nut at the back there so I'm just going to drill that out with the correct tapping size drill I'm just going to swap over there to a cobalt drill bit so I've now drilled a hole I'm now going to break the tap off into the bolt obviously that's broke and it really bad place it's not where I wanted it to brick so I'm just going to give it a helping hand you can see that has broken off and that is much better we've now actually got that deep in the hole not only have we got a broken bolt in there we've now got a broken tap in there as well taps are made out of a similar steel to a screw extractor just a word of warning about screw extractors / taps etc they are made from a very tough steel but it is very brittle it's absolutely critical that you were safety glasses if you're attempting to deal with something like the may break the shards that actually come off that when it breaks are actually like splinters of glass and they will quite easily embed themselves into your skin or your eyes so it's absolutely critical to wear safety glasses so at the bottom that you can see there's a tiny piece of the tap and that is going to stop me from getting the guide in properly so I'm going to try to break that off and that I've actually cracked off normally in situations like this you ever get a broken screw extractor or a broken tap both of these are very hard steels and they are incredibly tough to drill out you can't actually drill these with a normal drill bit you have absolutely no chance you could possibly use a carbide drill bit like that but these are very very brittle you have to be very careful with carbide they will drill tough steels but if you break one of those it is very difficult to get it out probably one of the only ways to get that out is to have it spark eroded afterwards you could use these to drill it out these are made by ARTU and these are multi-purpose drill bits these will drill virtually anything but as you can see a few of these are seriously battered especially the size which I'm going to need which is about five or six mil you can see that that is absolutely no use whatsoever now so I can't actually use them so that's one of the drill bits that we're going to be using which is a JCB Diamond-tech hole saw they have impregnated with diamonds on the end that is one that I've used previously to drill 60 holes in a Granite tile and I also used that to drill a tap a few days of weights to put that in the vise that is it grew up in tap and actually managed to drill through that using this hole saw this kind of Steel is incredibly tough it is very very difficult to drill it you can't actually drill out using a normal drill bit or a cobalt drill bit you have absolutely no chance so I'm going to take the drill guide that I've made and I've actually made a short version of that so I'm now going to tighten the drill guide in there to drill out the broken tap I'm going to use that one, which is a 6.5MM diamond hole saw that as a perfect fit in there and eventually we should be able to drill out that broken tap so I'm now going to dip this in some water I will keep dipping that in the water every five seconds so this is going to be a very long process but it is one of the few ways we can actually drill out a tap and I've just actually removed the bolt so we can actually see and you can see that in there it is actually cutting the tap away I have to point out this is a very slow process and if you can do it's much easier getting its spark eroded but for a lot of people that is not an option obviously this job is very time-consuming and I've been drilling that for about 30 minutes now and we're approximately halfway through so I can't stress how important it is when you're doing something like this to go and take a break you do not want to let a job like this get on top of you it's important to go out have a cup of tea going up something to eat etc never let a job like it's wind you up or you'll just end up getting mad with it and rush it and end up breaking something to apply this can't be rushed you really do have to take your time with them on that note I'm going to go a cup of tea we've got far enough in that we no longer need the guide bolt so I'm just going to remove that and I'm going to continue to drill I'm actually just going to change the drill bit over now that one has definitely had a lot of wear on the end there but I'm sure that will still go through a porcelain tile or a granite tile however I'm going to swap over to a brand new hole saw and we're going to see if that will continue cutting and we've actually just got the tap stuck in the end of there now so we've actually cuts the core straight down the center of the tap I do have to say that now did take a while and it was probably drilling that for a good hour or so but we've now got the broken piece of the tap and we've got a hole down the remainder of the tap which is approximately so long so now we have a chance of getting the broken tap out and the bolt that is still stuck in there so that's the piece which is approximately one inch long and if you now look in the hole you can actually see that we've successfully drilled out the broken tap we now just need to drill out the remainder of the bolt so drilling that out will be very easy I was going to use this screwdriver I'm just going to use that to get the depth of the hole and then I want to transfer that onto a drill bit because we don't want to drill too deep so I'm now going to take some cutting paste and then I'm just going to drill out the remainder of the bolt that's in that hole now we've done that I'm just going to clean the hole out. you can then take an M12 tap then apply some cutting paste onto that and I will proceed to re-tap the hole I'll then just give the tap a clean I'll just clean out the hole and then we'll just proceed to tap the hole again It's important that you don't try and rush any of this the last thing you want to do now is break off the tap. you have to be aware that there is some steel left in the threads in there and we're actually trying to break out those bits of steel and re-tap the aluminium so you do have to do this very carefully and very slowly if you take a look on there you can actually see some of the bits of the broken bolt so that's why it's important to keep stopping to clean out the hole obviously if you've got a compressed air supply it's a really good idea just to give that a blow out and get any of the debris from within the hole well that hole is now clear I can now take an m12 bolt I can screw that in there absolutely no problem at all, it's actually gone a bit tight just wind it in the rest of the way using the spanner you can see that will hold absolutely no problem at all I hope you found this video useful if you haven't done so already please subscribe to the channel

Channel: Ultimate Handyman

Views: 403,146

Rating: 4.8617973 out of 5

Keywords: How to drill out a broken tap, how to drill out a screw extractor, drill out tap, drill out stud extractor, remove broken tap, drill out broken tap, drill out screw extractor, how to remove a broken tap, how to drill out a broken bolt, ultimate handyman, broken tap removal

Id: 7JCfEMrCjhc

Length: 15min 42sec (942 seconds)

Published: Sun Oct 14 2018