Ion Posted July 26, 2016 Share Posted July 26, 2016 Hello brothers and sisters I've just gotten my hands on a number of B@C tactical marines and I've never actually drilled out bolter barrels before. I was wondering if I could get some advice on: 1) what size bit I need for my pin vice 2) how to go about doing the drilling without ruining the bolter being used. Thanks for your help Link to comment https://bolterandchainsword.com/topic/324206-drilling-bolter-barrels/ Share on other sites More sharing options...
Major_Gilbear Posted July 26, 2016 Share Posted July 26, 2016 You will need a small drill bit about 1mm diameter, although I use 0.8mm as I prefer the smaller bore. I also use a rather larger 2.5mm to countersink the end a tiny amount. For the drill bits, you will need a small hand-held pin vice like this. They typically cost no more than £5 including shipping. The drill bits I would buy online via ebay - they are cheap and readily available, but make sure you buy ground bits and not rolled ones. Now the technique: 1) Using a small file or emery board, smooth the front of the muzzle to give you a nice flat surface. 2) With a knife tip or a sharp awl, make a small divot in the middle of the muzzle where you will drill. This divot will help you start the hole off in the correct place. 3) Drill your 0.8-1mm hole. Don't go too deep! 4) Holding the bigger drill bit in your fingers, carefully offer it up to the hole drilled and give it a little twiddle. You just want to take the burr off the hole you've drilled, not make it bigger. 5) Optionally, you may want to return with the small drillbit and drill cross-ways through the side of the muzzle for the two vents. It may be that it all goes wrong somehow, and you muck it up. Don't worry! The hole can be filled with a putty like Milliput Yellow-Grey and re-drilled when cured; alternately, you can chop off the muzzle and replace it with a small piece of plastic rod before trying again. If you're drilling through metal models, the drill bits you buy need to be carbide-coated or they won't cut properly. To avoid the small bits getting stuck in the metal model and then breaking, first drill into an old wax candle before drilling into the model - this coats the bit and helps to avoid it sticking in the first place. Link to comment https://bolterandchainsword.com/topic/324206-drilling-bolter-barrels/#findComment-4450996 Share on other sites More sharing options...
Subtle Discord Posted July 27, 2016 Share Posted July 27, 2016 Another couple of small tips I can offer for drilling really accurate holes; Make yourself a really accurate 'awl' by mounting a nice needle or tailor's pin in a handle of plastic. When you need pin-point precision, use a pin. When drilling the hole, drill backwards while applying pressure before you start drilling forward. The bit won't cut, but it will expand the pin-hole and shape it into a 'V' and this will make sure the bit won't drift when you start drilling. This has the added benefit of giving a larger round dot that you can check for accuracy before you commit to drilling the hole. If the mark is off center (or whatever alignment you're trying for) then back drill it a bit more while adding sideways pressure to correct the placement; a bit more adjustment can also be made when you start to drill forward with the same kind of light sideways pressure. I've drilled literally thousands of holes for rivets with extreme accuracy using this method. Link to comment https://bolterandchainsword.com/topic/324206-drilling-bolter-barrels/#findComment-4451531 Share on other sites More sharing options...
Jamafore Posted July 28, 2016 Share Posted July 28, 2016 Something I do is on your standard bolters, I'll drill through the side holes first using the molded depression as a guide, that way I only have to pierce the plastic at the front of the muzzle Link to comment https://bolterandchainsword.com/topic/324206-drilling-bolter-barrels/#findComment-4452278 Share on other sites More sharing options...
old git Posted July 28, 2016 Share Posted July 28, 2016 Something I do is on your standard bolters, I'll drill through the side holes first using the molded depression as a guide, that way I only have to pierce the plastic at the front of the muzzle Exactly the way I do it. The flash reducer vents have a handy guide ready made for your drill bit, then the actual bore of the barrel is much thinner, requiring less effort with less room for error. Link to comment https://bolterandchainsword.com/topic/324206-drilling-bolter-barrels/#findComment-4452307 Share on other sites More sharing options...
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