I followed your video and fabricated a short piece of 6 inch stove pipe to connect to the 6 inch steel liner inside my brick chimney it worked perfectly. Thank you once again.

Great video and thank you for taking time to make all these great layout videos .

Finally, someone who can dumb it down enough for me to understand 😁😁👍👍👍

ur videos are awesome sir , thanks for sharing your ideas of layouts.

This is what should have been taught in school. I will definitely show my daughter this. I always maintained what we learned I. School was not practical. You, however. That's an entirely different story. Putting mathematics where it's needed. I recently learned trigonometry then proceeded to work out the formulas on spread sheets. I'm making some frames from discarded fencing posts and have made some jigs to cut with a cold cut saw. Well done and thanks for uploading.

To get a more accurate template, you can simply take the O.D. 3.5 * pie / 16 = 10.9956 / 16 = .6872. Use this as the measurement from the last step before extending the lines upward. Using the compass between the points on the O.D. introduces the error which is why the length came out shorter than it should have. Good information

Amazing Sir, I work with Ac And i usually saw duct people working with that , this is very interesting, thank

Nice video. It's helpful for me & helpful for others like me.

Thank you kindly, sir. You are right, this is very valuable to know. This is money.

fantastic videos!

Realy so nice vdo v v helpfull for new trainee of pipe fabrication work

It's valuable these technical drawings

For this type of fit up only the bottom drawing is needed , the top drawing is only needed to draw the side profile for diagram purpose , to make the template simple use the bottom diagram

i do insulation method is the same but we use something is simplier more easy to understand

Dave thank you so much for this video, I have been looking for this for a while. I teach pipefitting in Houston. Could you show how to develop a dummy leg coming off a 90°ELL

thanks Dave!

Really helpful. Thank you

The "numbers to space them apart" are arrived by equally dividing the arc segment into 4 equal parts, creating 5 points. A quick down and dirty way to fit a couple of pipes together, especially small like 2", is to nip the 2 opposite edges of a 90 degree pipe end off at about 45 degrees. Don't cut quite all the way to the center line on those cuts. Try on a couple of scrap pieces. A minute of clean up with a 4" grinder will have those pieces fit up and ready to weld!! Of course a 2" hole saw in a still press is also a quick easy way to note a pipe for fit up! Dave

Hey Dave another great video I was just wandering couldn't you just use the bottom diagram (top view) and just measure the segments off the perpendicular line to make the unequal tee? I love seeing other techniques which I don't use completely great,I still would love to see your technique for a rectangle to round transition

Did you take the length of the outside diameter to do the final cut layout. Like where the line for 1 intersects with the outside diameter of the 3 inch pipe. You added the 1/4 for the outside diameter but u dint measure from the ouside of it but from the inside diameter. I dont know if you understand me.

thanks Dave

that's cool!!!

On your overhead view, the pipe endo mark does not line up with the side view endo. Does this matter?

is there a computer software program/app that I can enter my dimensions into and get that wave?

Can you do a 3 way Elbow pipe , basically a 90 degree and then another pipe peice facing upward

Why do you draw the outside dimentions on the bigger pipe but the inside on the smaller pipe?

Thanks for answering it clarified everything. Is it possible if you have time to do a video on how to make a template for the hole. Many thanks.

Could you do this video again with more explanation and detail. Because I'm still not quite getting it. I weld ss pipe for a living and we don't have good templates for cutting pipe and I want to learn to make Templates for saddling the pipe

hello friend great video , im just curious , it seems to me that you provide a sequence of steps that can be skipped . the step where you cross hare the points seems as though its not necessary as the over head view provides this info . now maybe if it wasnt a 90 degree saddle i could see the need but it seems the over head view generates the needed dimensions. brother im not nocking your work at all im simply attempting to remove confusion from my own mind as i cannot under stand why we would use these extra steps on a t saddle . i laid out a tangent connection using your method and discover i didnt need to use these extra steps , maybe there is something im missing

Thanks

Excellent but I'm kind of confused on how to create a template for the hole in the header. When you find some time maybe you would create a video for that?keep up the good work!

I think these videos are great ... would you consider showing how to use parallel lines to make more complex shapes. I have and book called sheet metal problems by james daugherty and they show you how to make skylights. The drawings are a bit confusing.

Does this technique work on a 90 degree elbow?

thanks sir.

Quick question, can't you just grab the dimensions from the top view instead of transferring them to a side view? Is there need for a side view?

I know that the numbers 1-5 have to be equally spaced, but where did you get the numbers to space them apart? It'd be great if you explained that, my welding class (in high school) has to make saddle cuts to fit two 2" pipes together. Although we have to figure that out ourselves, so I'm trying to look for techniques to help.

Did you draw the 4" pipe ID or OD

is not needed to make the first transition patten, you can use the secound one only and from it transfer the lines to develop the tamplate.

Does the centres of the 2 circles have to be on the same vertical line on the graph paper. Yours don’t appear to be but I’m thinking it’s the camera angle making them appear not lined up ? Thank you for this video I’m anxious to try it out.

Hi great video! I have been looking everywhere for the triangle ruler you that you use here and seem to not find none. Where would be the best place to get one?

hello sir very good job.sir can you share me how to make pattern and what formula using for eccentric dummy bottom flat? wish u reply me

Hye... How to make template for hole on pipe?

Bang on

Excuse my ignorance, but why in this video were the segments divided into 5 and the others into 9. Thanks

hi I was wondering, is this like another version of an unequal "T"? I work with sheet metal and it seems like the same scenario but you did it a different way.

whoever discovered this relationship in mathematics must have been a savant

thanks ^^~~~♥

Hi Dave can you do a concentric 45 lateral layout video it’s driving me nuts trying to figure it out? Please thank you 🙏

i did this absolutely perfectly the way he presented it but it doesn't work when the pipes are the same diameter. what gives?

excellent sir,,,what a easy way to draw a template..... what about eccentric reducer template waiting for that one?

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Please access me to download this piping isometric formulas

Is this the same for joining 2 pipes that are the same diameter?

dude you gotta slow down and explain things a little better . what measurement are you using and where did you get the numbers. we are not engineers or drafters and do not have scale rules.

slm

3" into 4". Not the other way around.

First of all draw ID or OD of pipe

Tamil languages explain

WATH ABOUT THE HOLE

Wait...did this guy just suggest people take remedial courses in math? Wow! 4.5 minutes into the video, and I can't believe he still hasn't explained something that should have been fairly simple. Clearly, his main objective was to exhibit his drafting skills.

At least make your lines straight