Thanks a lot

Muito obrigado meu amigo

Thanks, my friend The last part is the method of sharpening the drill to create a conical hole and then making a hand tool for cutting and seeing the performance of the conical drill.

Thank you very much!🙏🙏👍❤️

You’re welcome 🙏👍💐

Thanks for the visit

teşekkürler iyi arkadaşım

Thank you so much🙏

Variable speed to find the correct most accommodating to your machine(lathe/mill), your tooling and the material being machined is a good additional option for optimal machining but you also need constant speed that is not varying as you engage cutting. Some small lathes have variable speed DC motors but lack the Hp to develop the needed torque to maintain the speed at some RPMS. Older lattes had pulley combinations and gear combinations and machinists learned what setup was best. Same for every machine, learning and maintaining the machine, making accuracy improvements where you can.

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Terima kasih temanku

Thank you very much my good friend🙏🙏🙏💐

I noticed that too, but how does it affect the results?

@@CompactFlesh well, first off I am NOT a machinist, but a person that t has some background in machining and watches a lot of videos of professional machinists as a wannabe machinist. I decided to enter the field of electronics in the military and later instrumentation and controls as a technician and later as a senior technical(non-degreed) engineer. I would suspect that the tailstock being out of alignment could cause misalignment of drilled and bored holes as there is always flexure with drill bits and even boring bars especially small boring bars but when you get larger you are also using larger cutters and there is rotational force placed on the drill bits cutting face and cutting edges. It might not matter much on shorter pieces drilled/bored but like in biting the chamber for a rifle where bore concentricity is very important the cartridge chamber and cartridge to bullet throat area could be slightly canted and result in accuracy as well as possibly longterm shooting related feed and extraction problems. I’m also NOT a gunsmith. But trying your lathe, mill, surface grinder, etc is vital to minimizing small errors that were within the control of the person (machinist( and the machine’s real capability.

@@hobtinkso if it causes misalignemnt, what does a boringbar cause, moving further and further away from the center? Is the bore even more misaligned?

@@CompactFlesh again, NOT a machinist AND NOT a gunsmith but when accuracy of Machining counts it counts. I would imagine but do not know for certain that between ever so slight angular misalignment(tailstock) that rotational and even slight additional angular forces placed on a properly aligned drill, reamer or boring tool are increased against the cutting edges of any cutting tool and part being cut and will result in some dimensions that are not as desired or exactly where and/or aligned as desired. I don’t know that the small amount of misalignment that was probably existing caused any problem but it probably didn’t help anything. If there is a full cartridge and bullet length go and no go gage set and some machinist blue would probably tell more than any way the average DIY hobby machinist has of knowing what effect it might have caused. I would imagine that there are some gun smithing measurement tables from which a go no go cartridge gage set could be machined on a very accurate and known properly setup lathe with very careful matching to check it. There may be minimal problems other than let’s say someone bought a very expensive and supposedly very accurate grouping barrel to bore themselves then find the barrel and cartridge loads didn’t meet expectations that some misalignment could be the problem right off or soon show up in shooting. Additionally if bad initially and let’s say the chambering cutter was off some or not of high quality there may be some extraction issues that worsen after many rounds as the chamber wears and/or the brass case miss forms during firing due to chamber pressures and slight cartridge misalignment. In watching numerous other marching videos it is not uncommon but between three jaw chucks that were never properly aligned and trued tailstock Miss alignment is what I most often observe. I am learning from watching and observing and was not trying to be critical of the person doing the work but hoped that he reads comments and would indeed check his tailstock alignment. Machining is a skill set where you need to learn/be taught/self educated before starting a critical project BUT if you pay attention you’re always going to be learning about machining like most all other skills. As far as safety in use of the barrel I would do some research and some remote bench firing of the rifle firing the bullets into gelatin or preferably a open front source of several feet of water so as to not dis form the bullet from impact then examine my bullets and cartridge cases including accurate measurements of them and examination of the bullets to determine if I thought the slight misalignment caused a potential safety problem with the rifle based on its design. I would also verify if/just how much misaligned my tailstock was or was not and if any concerns remained find a gunsmith that did this type of work to consult with. If the barrel was a potential concern and could not be safely rebored to a larger case/caliber I would consider what else I could use it for. I think he mentioned that with his present tooling now purchased that he could make/chamber an AR barrel in that caliber for $39.95 which I haven’t looked but don’t know where or what kind of barrel he could get for that price but if under a $100 it would be a learning experience and we all start somewhere and make mistakes along the way. I doubt any lathe or mill except the most expensive come from their crate capable of achieving the manufacturer’s spec’s accuracies and all should be inspected, checked, trued and aligned if you want real accuracy. The fella to memory also used the words “I think” a whole lot when speaking of measurements and again NOT to be critical as he may have known but just used that phraseology and been dead on with his calculations and specs but in machining close isn’t always close enough, if not right something is going to have to take more pressures be it from a shoulder, inner bore if a gear or outer gear not meshing properly and not work as long as or as intended. One thing I live about working with steel and see from other machine videos you often get to check at least part, the parts you made to fit for proper alignment and interface. However, there was a reason the part you are repairing, reworking it making new wire out ir broke and without the entire assembly there to install your parts in all you have to go on is what the customer brought you and told you. You often have no blueprint or spec sheet if the original part so it’s somewhat trial and error and where years of knowledge and thinking payout from that person having been a machinist. Machine also challenges you to be creative, yet remain safe in how can I do work in a lathe that most would do in a mill. Watch some if the manual machine shop videos from India, Pakistan(I think) and Vietnam those fellas come up with creative ways to do mill work on a lathe.

@@hobtink I can tell you are not a machinist, so let me advise you, that drilling is not a precision operation, but always selfaligning on a lathe. Your observation is correct. You are a good observer.