Making a Rifling Twist Template (VR004)

[@arthurshreffler4870]

great video. really like when you use only basic tools. the old saying still is true "a pic is worth a thousand words" thank you!

[@hawkarkirkuky1551]

Arthur Shreffler

[@sprungmonkey6inches]

Funny, i love throwing basic math stuff at my kids (12 & 14) when they are trying to impress me with whatever their learning that week. I flew helicopters in the army before i became a critical care RN and learned to do all tactical and IFR navigation without apps or calculators (encase the Soviets nuked all the satellites and EMPd all the non shielded electronics). great 2d conversion of a cylinder to a 3 d model.

[@sethmullins8346]

I just got my own lathe and I will definitely be trying to use this I want to rifle a 12 gauge shotgun to fire lead bullets from it (black powder only, no high pressure) and it would save me a lot of pain not having to have a custom barrel made for a 200 dollar shotgun.

[@JamesSmith-su3oz]

thank you kind sir for making this video. it explains a lot. making a gun barrel from a bolt and a drill press, you have some skills. J

[@TheIdahoanShow]

Thanks--glad you found it helpful!

[@teamtinyturtle9103]

Skills every American should have. I'm going to pass what I'm learning here down to my children someday.

[@HondoTrailside]

If you do the drawing in cad, you can transfer the ink from a laser printer directly as layout on your button. Just wet with acetone and rub. You only get one shot, as the ink sets, at least with my printer. It sets either on the object you want to mark, or the page. But once you get one drawing in the CAD, you can populate each printed page with multiple drawings so you have lots of shots. Another cool thing is you can fractionally expand the X axis on different drawings so you can be sure to get a perfect wrap from one of them. CAD can be complex, but on a thing like this, you can make say the layout square with only a few pushes of a button, and it will come out exactly correct.

[@donaldcampbell7894]

Love your videos

[@jackjones9460]

What seemed incomprehensible to me, you made seem reasonable! Thank you.

[@albundy8139]

Even your math videos are fun! Keep up the great work! Also congratulations on 1000 subscribers, been here since 180 or so.

[@TheIdahoanShow]

Thanks--both for your compliments and for your loyalty!

[@gottmituns3225]

So do i sir!!!

[@gottmituns3225]

TheIdahoanShow Sir , you are an example to follow for many folks❗️

[@JagdishSingh-gp3zp]

Wow sir well done 👍

[@Schrodingers_kid]

Thanks,helped a lot

[@Brian-oz7ur]

thank you for sharing this knowledge. I have a doubt: The button must have the groove's diameter and the template must also have the groove's circumference?

[@rufusleers]

Did he ever make a video grinding the grooves?

[@jacobstaten2366]

Save you some math by using more paper. You want a 1/10 twist, measure 10 times the length on the y axis from the base and move it over 1 width on the X axis from where you made the mark for the rifling. Use a ruler from point to point.

[@donaldcampbell7894]

I’m sorry I’m critical I’ve been a machinist my whole life .004” inch is very critical

[@donaldcampbell7894]

It’s the difference between a piece of scrap metal and I finished product

[@waynemarsh1358]

Thank you sir love the explanation and the math I am making a m6 a 22 12ga combo I was wondering could you to carbide drill bit to rifle the barrel i saw a Russian u tube video where a bit was altered to do this i think bits are 10 to 12 deg which is close to the desired twist rate looking forward to your input

[@TheIdahoanShow]

Most of the carbide tipped drill bits that I've seen just have a flat carbide insert brazed into the tip, which would be hard to make a rifling button out of. Maybe they make them differently in Russia.

[@waynemarsh1358]

how about a high speed steel bit with no carbide

[@68balls]

NICE ! If you ever get into paintball, talk to me

[@MrAirshot]

what about the twist rate ?

[@TheIdahoanShow]

The angle of the lines sets the twist rate. In this case I used a twist rate of 1:10, or 1 revolution every 10 inches.

[@MrAirshot]

correct me if i am wrong say i need 1:16 twist rate, so i will draw a rectangle 16" by the circumference of the bore id then draw a line from top corner to the other side low corner ,the angle will be the one facing the long line?

[@acbarrel4892]

Hi sir what degree or angle for 1:19 twist?

[@jackjones9460]

I think: 1/19=0.05263 so 0.05263”. Get a calculator and check for yourself. If you get 19 the first time, like me, you put the numbers in the wrong order. Do it again. Someone else here suggested drawing out 1 then up 19 to avoid the math. Rise over run technique.

[@jameswitte5167]

you need a parallelogram ...

[@thor-dx8sz]

I like to use a piece of paper and if I want a 1 in 7 twist I go 1 inch left to right and then go 7 inches high and then just cut off what I don't need

[@thor-dx8sz]

Also once you have the first one you can make a whole bunch of perpendicular lines to that first line you have to make sure the correctly spaced at both ends

[@keskinpastane7761]

i dont understand maht can u make template for 410 and 9mm for me ? my personal e mail is [e-mail]

[@ashusingh3501]

buddy plz do a d shaped or easy to make reamer for. 22lr plz plz.

[@donaldcampbell7894]

You just said 1.75 inches but you went to 1.71 after just telling everybody 1000 or two too big or too small is detrimental

[@TheIdahoanShow]

It's been a while since I made this video. It's possible that I was trying to hurry so that it wouldn't drag the video out and I got careless with adjusting the calipers. It's also possible that I did adjust it to 1.71 but it looked like 1.75 on the camera because of parallax, since the camera is off to the side and may not be pointed at the dial straight on.