now this is the real deal tapered pipe thread video... sir you have taken out the mystery of these threads. i have been going in circles learning how to use freecad to make a 1/4"18 thread NPT 5000psi adapter. many thread videos leave out these details. then next is to do the machine shop lathe work. this is all new to me and is a good rainy day project. i found a close copy of the machinist tables and that helps a lot watching your video. also, in learning freecad with the correct detailed numbers to use cnc and 3d printer stuff for future projects. thanks a lot...:)
Its good to watch excellent work being done. One thing I like to do as well as getting a job done the best I can, is to write it up in Excel and so once that program is there, it applies to all jobs. All the facts and figures which apply to doing any kind of thread get shown when you just enter the Major OD and Pitch. Metric, Imperial, Acme and now I'll have a go at the Pipe Threads as you've shown. Great video and well done.
Nice job! The accumulator is a really good idea. We could never get away with that though. The low pressure side feedline has to be sized to accommodate the droop at startup. In most cases we just ran the distribution at a higher pressure...like 3 to 5 psi and put low pressure regulators at the point of use. That way we could run smaller feedlines. 43 years of mechanical contracting and I’m glad I’m not running pipe now. Lol.
Very nice looking accumulation tank. Had not thought of that for extra fuel for starting. That looks better than "factory made." Remember in high school math/algebra classes when we said, "I'll never use this!" Little did we know. LOL
hi Randy, I worked in UK gas industry working to obtain appliance approvals. The "rule" was for BSPT 3.9 fully engaged threads we never knew if this was achieved in the field but relied on go-no go gauges to pass standard in the lab. Regards, Ted.
Yes my friend, as you rightly say, it is a very low pressure threshold, nonetheless, a gas leak an and does lead to a atatrophe, but even I here across the pond have full confidence in your fitting once the welding has been done. Over here, that thread is known as BSPT......British standard pipe....tapered.
I always wondered what i could use a taper attachment for - other than machining tapers that is ! Good luck on the fishing trip , hope you get a "bigun" !
Btw. If you glue a small round magnet to the center of something flat, like one of your engraved tags. You can attach the magnet to the rear exposed shaft of the filament drive servo on your Prusa, it becomes a great way to monitor speed and rotation and therefore the extrusion speed. If nothing else, it puts a little fun bling on the Prusa Mark-3 printer. (Sometimes you need to stack 2 magnets to reach the end of the shaft if it’s too deep) I have a ships screw that I printed rotating on mine. 👍🏼
Informative. I never went beyond cranking an NPT tap into a drilled hole. At a minimum I missed the reamer step, which may explain why taper pipe threads were always so blasted hard to do!
I noticed the threading bar jumping over as it engaged the hole. I guess you are alowing for that by hand fitting the pipe. Thanks for the vids. A good explanation for making tapered threads. The same sort of threads used in oil well drilling except they use a square thread contour. Not quite an Acme thread.
Great video. Gotta love those handbook guys, lol. Like getting a recipe to your mother's secret dish... Do this add that and get such and such ready the day before and if you really want it to be just like mine you'll need the secret ingredient... Yeah I'll let you figure that one out, it's actually quite easy if you think about it.... :-)
Very fine job well done, I never knew how you could do this on a lathe. You explained it so well too. The finish product is excellent. I was waiting to watch you weld that canister. Do you have the video for that. Great job thanks for the visual and narrated operation perfect.
Very good explanation for me to understand. I looked else ware but found nothing helpful. Thank you for posting this. It was enough good information for me to start my own project. I need to thread the inside of a cast iron exhaust flange to 3" NPT. The part is only 1.25" thick so the thread was not that long.
Great demo and explanation, I've never needed to do that. Now if the pipe fittings from Taiwan, China or India (take your pick cause that's all there is) had any accuracy we'd be fine....Dave
Nice job randy looks really nice. Always wondered how larger NTP were cut. Could threaded the end caps and use a couple of o-rings to attach it to the tube. I have a 4000psi aluminum filter for a HP compressor that's done that way.
I think, but can't be sure without measuring: You set the taper to one side(0.187"/3inches at 22:20), rather than the included angle (0.062"/inch travel is 0.125"/inch taper on diameter, or twice the desired taper), leading to your oversize at 27:30. Pipe thread is forgiving and may still make up fine at 250mm- 10"- water head, but please do pressure test carefully. (my boiler supply rested at 1bar-approx 15PSI- for 24 hours with no detectable drop to 0.001bar sensitivity- 0.4"- water head). The inspector asked why so high and so long? They are usually happy is the gauge hasn't dropped to zero from one quarter of that pressure.... Yes I was worried for my neighbors)
I would agree with your observations of double the required taper The angle between the taper and the center axis of the pipe is 1 47' 24'' (1.7899) Tan 1.7899 * 12 = 0.375" per side per foot ( 0.75" per foot on diameter ) 0.1875" per side in 6" of travel 0.09375" per side in 3" travel
@@RRINTHESHOP Thanks! I always like to know what folks are using. I'm eventually going to pick up a lathe so I can make some things that I can't find. :)
liked the video, but you didn't explain why you set your compound at 29-1/2 degrees, NOT 30 degrees, as I would have expected. Another thing, I was a little surprised you didn't cut a bigger chamfer on the tube and the end caps to facilitate welding.
I would really like to go to Mr. Pete's and I could drive out there but I have a special activity at work that day so I will be working. Have fun. Looking forward to hearing from you when you get back.
Сначала не понял нахрена он приставку для конусов ставил , ведь можно было обойтись малой продольной , потом допёр ,что для нарезания конусной резьбы. Видимо запчасти для бурового оборудования . Качество на высоте .
@@RRINTHESHOP I grew up south of Missoula and still spend time there a few times a year. Thought perhaps you were fishing the Bitterroot river. Hope you catch the BIG one. 😀
Ironically, all the theorising and calculations flew out the door the moment the threading tool engaged the stock because the taper attachment was pulling on the slack side of the feedscrew backlash.
That is not what I meant, once the cutting forces overcomes the slide friction then yes the angle is accurately tracked but If you think about it again or even watch at the moment of engagement you will notice the tool jump totally negating any preset depth of cut. Which was I was alluding too. This jump is caused by the backlash accumulated during the lead in feed movement.
I like the video, but you could have told the same story and easily cut 15 to 20 minuets from the video, please don’t take offense, it’s just a suggestion, we need more machinists on You Tube.
Absolutely not in my case, I learned a lot from his video esp when it came to the tapering concept. You just had to follow in big screen mode to see the complete process.
