Vermincinerator Posted June 14, 2010 Report Share Posted June 14, 2010 On closing the bolt i kept on catching my thumb on the zoom ring of the scope on my .17HMR CZ 452, so i decided to fit a Third Eye Tactical bolt knob. Some will say it looks a little bulky but its a vast improvement on the tiny little ball of the factory handle, the bolt can now be cycled fast and positively without taking chunks out of my thumb. Ian. Link to comment Share on other sites More sharing options...
auquhollie Posted June 14, 2010 Report Share Posted June 14, 2010 ooooooooh i like, i like alott Did you do it yourself ?. Ads Link to comment Share on other sites More sharing options...
Vermincinerator Posted June 14, 2010 Author Report Share Posted June 14, 2010 Yes Ads, i made up a lathe turning fixture yesterday and turned down and screwcut the bolt handle today Ian. Link to comment Share on other sites More sharing options...
lancslad Posted June 14, 2010 Report Share Posted June 14, 2010 Can I just be the first to say....... Thats a HUGE looking Knob that you have got................ Link to comment Share on other sites More sharing options...
alled12 Posted June 14, 2010 Report Share Posted June 14, 2010 Nice work Ian as always. Link to comment Share on other sites More sharing options...
NICK Posted June 14, 2010 Report Share Posted June 14, 2010 Ian Nice work mate. Lovely job. Maybe there is a niche market for a tactical style knob scaled down slightly for the Rimfire Actions? Nick. Link to comment Share on other sites More sharing options...
BIG 30 Posted June 15, 2010 Report Share Posted June 15, 2010 All we need to do now Ian is get you to spend some money on a new set of rings Glad you liked the knob. Craig Link to comment Share on other sites More sharing options...
SteveW Posted June 15, 2010 Report Share Posted June 15, 2010 Ian, Looks the nuts. Did you have to alter the bolt handle angle as obviously the new bolt knob is bigger?? Sorry if this is a stupid question, but please indulge a precision engineering idiot............. ATB Steve Link to comment Share on other sites More sharing options...
Vermincinerator Posted June 15, 2010 Author Report Share Posted June 15, 2010 Hi Stevie, I made a lathe turning fixture which presented bolt in such a way that the centreline runs through the middle of the bolt handle in the lathe, a bit of final clocking up in a 4 jaw gets it as near as possible. The ball was then centre drilled, supported with a live centre, turned and screwcut M8x1.25. The only alteration was a bit of contouring and the forming of a radius at the front of the handle where it enters the replacement knob. The round factory knob is offset by .125" which when it was turned it did not present an even radius around the bolt knob. Ian. Link to comment Share on other sites More sharing options...
SteveW Posted June 15, 2010 Report Share Posted June 15, 2010 Hi Stevie,I made a lathe turning fixture which presented bolt in such a way that the centreline runs through the middle of the bolt handle in the lathe, a bit of final clocking up in a 4 jaw gets it as near as possible. The ball was then centre drilled, supported with a live centre, turned and screwcut M8x1.25. The only alteration was a bit of contouring and the forming of a radius at the front of the handle where it enters the replacement knob. The round factory knob is offset by .125" which when it was turned it did not present an even radius around the bolt knob. Ian. Thanks for the detailed reply Ian. Always interesting to understand the processes/attention to detail needed to achieve the results. ATB Steve Link to comment Share on other sites More sharing options...
auquhollie Posted June 16, 2010 Report Share Posted June 16, 2010 Ian, You fancy doing another one ?. Ive got a spare handle sitting in my box waiting to be fitted. Ads Link to comment Share on other sites More sharing options...
Vermincinerator Posted June 16, 2010 Author Report Share Posted June 16, 2010 Ian,You fancy doing another one ?. Ive got a spare handle sitting in my box waiting to be fitted. Ads PM Sent Ian. Link to comment Share on other sites More sharing options...
nico243 Posted June 24, 2010 Report Share Posted June 24, 2010 cool looks like a good job! Link to comment Share on other sites More sharing options...
Gandy Posted June 25, 2010 Report Share Posted June 25, 2010 Nice work, looks good. Link to comment Share on other sites More sharing options...
maffs Posted July 1, 2010 Report Share Posted July 1, 2010 This looks to Dogs and although i dont have a spare handle i'd be willing to give the cz a break for this treatment Are you doing, or would you be willing, to do another Thanks, Chris Link to comment Share on other sites More sharing options...
Vermincinerator Posted July 3, 2010 Author Report Share Posted July 3, 2010 This looks to Dogs and although i dont have a spare handle i'd be willing to give the cz a break for this treatment Are you doing, or would you be willing, to do another Thanks, Chris Hi Chris, I sent you a PM but your PM fascility may not be activated yet, Ian. Link to comment Share on other sites More sharing options...
airarmstx200 Posted June 23, 2014 Report Share Posted June 23, 2014 Hi Chris, I sent you a PM but your PM fascility may not be activated yet, Ian. Link to comment Share on other sites More sharing options...
airarmstx200 Posted June 23, 2014 Report Share Posted June 23, 2014 ive got one of those on my cz 17 hmr i bought it like it but i hate it so if interested ill let it go for £30.00. pm me if interested Link to comment Share on other sites More sharing options...
hunter87 Posted July 2, 2014 Report Share Posted July 2, 2014 Can I just be the first to say....... Hmmm saucy Thats a HUGE looking Knob that you have got................ Link to comment Share on other sites More sharing options...
DW58 Posted July 2, 2014 Report Share Posted July 2, 2014 Excellent job - I had a larger bolt knob/handle fitted to my .222 CZ years ago, made a huge difference to the handling. I'd like to do something similar to this for my .22LR Anschütz 1416 which has such a stupid spindly knob/handle. Link to comment Share on other sites More sharing options...
caesium Posted March 20, 2016 Report Share Posted March 20, 2016 Holy thread resurrection batman. I'm looking to do this to my 452 as my thumb is suffering. Saw a thread where someone ground the bolt down manually and used a die to cut the thread. I think I might just do this as I'm not going to pay 200 quid for a smithy to do it when the rifle only cost me £280. Link to comment Share on other sites More sharing options...
jimmyhall Posted March 20, 2016 Report Share Posted March 20, 2016 Is exactly what I did with mine. Bench grinder to get the shape and line then a die to cut the thread. Worked perfectly and a vast improvement over the silly small knob that it comes with. Link to comment Share on other sites More sharing options...
bradders Posted March 20, 2016 Report Share Posted March 20, 2016 Is exactly what I did with mine. Bench grinder to get the shape and line then a die to cut the thread. Worked perfectly and a vast improvement over the silly small knob that it comes with. Nothing wrong with that, but the previous posters £200 is way off the mark I charge £70 posted RMSD.....and that includes the bolt knob! Link to comment Share on other sites More sharing options...
caesium Posted March 21, 2016 Report Share Posted March 21, 2016 Nothing wrong with that, but the previous posters £200 is way off the mark I charge £70 posted RMSD.....and that includes the bolt knob! Might be off the mark for you, but when I had a call around that's what I was quoted. What bolt knobs do you fit? Link to comment Share on other sites More sharing options...
bradders Posted March 21, 2016 Report Share Posted March 21, 2016 Might be off the mark for you, but when I had a call around that's what I was quoted. What bolt knobs do you fit? Blimey, I must be missing a trick I use my own, had a couple of hundred made a few years ago. Very nice too. That said, if there's something unusual about these bolts then I'm in the dark on this Link to comment Share on other sites More sharing options...
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