I took mechanical drawing in high school (1972) and loved it! This brought back fond memories! I agree with you, anything you can do on a computer is much better understood if you know how to do it manually. Thank you for taking the time to make this video.

This is great! I need to make a cone for a dust collection system for my shop. Just what i was looking for. Understanding the “how” makes using programs more meaningful.

Thanks, Dave. Your pattern layout videos are very helpful.

this video helped me layout a sheet metal lighthouse for Big Storm Brewery here in clearwater, fl. What a life saver! thank you

Thank you Dave. That's gold!

I'm a sheet metal apprentice going through school. we're in our radial line development class right now and i'm naturally a slower learner. i appreciate the extra help youve provided here! thank you, God bless you -Gabe

Hi Dave, first of all your tutorial is very clear. One remark I have is the same as some of the other comments found. Points 1 and 7 for the small slanted opening are correct, but 2,3,4,and 5 should be horizontally transferred to the right side of your cone. You would then swing those numbers from the slant side to their corresponding numbers on the from the baseline stretchout.

Thank you so much! This has been eye opening!

thanks for the upload. you hit the spot. out here on the field we don't have computers.

Best video so far ,thanks.

Well explained and presented Dave, Thanks

Oh ok that is awesome. Not exactly what i doing but great explanation, i can take it from here. Thanks for sharing.

Thanks this is the video I've been looking for.

Oh yeah by the way I don't know any carpenters that can do this layout, The only people I know are sheet metal guys. This is straight out of my sheet metal drafting book. Good job explaining and also nice vid!

Thanks a lot, feel like a moron in class when teacher trying to make us do these with little information at hand, suppose they want us to learn through figuring out how to do it in our heads so a video like this will be of tremendous help and easier to understand imho. Again thanks!

Thank you sir for explaining with clarity

The way you instruct is good

Your vids are simple consise and to the point-love it! Could you do a demo using ACAD? I have to do layout for heavy fabrication at work in our boiler shop. I am not given the time to dedicate to straight layout. I have to do multiply tasks along with helping others. I need a quick tutorial for triangulation using ACAD-thanks.

You are a very good instructor. Thank you.

A lot of negative comments here. I didn’t realize that sheet metal fabrication employed the precision of watch gears. Good grief ok how about all you naysayers upload a video of how “you” would have done it. Great video I’ve been raking my brain trying to figure out how to make a cone for an old grain bin we have. This video has been the very helpful think I’ll do a scaled version first. Thanks for posting. To the naysayers stop being snobs.

Awesome! Thanks!!

Awesome thank you!!

Dave, I was able to put this to practice using acad. I followed your paper and pencil method and used the acad tools. I came out pretty accurate-Thanks again!

Great pattern making

Very nice way to explain Thank you

Awesome Dave. Would you do some square to square transition video.

Good technique.

Dave, when properly laid out each developed line should touch the flat table, without rocking. Lines 1 & 7 are true as drawn, all other true lengths are developed by projecting points at the miter line to 1or7 at a right angle from center line. Swing arcs from apex adjusted to the new developed positions on line 1or7. When complete all points on the miter line will touch the table.

What are the instruments you used to layout the paper in the video? Great demonstration and thank you btw🙂👍🏾💯

Do you have video for cone you raised first, slanted on larger circle?

Hi Dave- great video! I learned a lot. I have a bit more complex shape: a Volcano cone shape: wide at bottom, tapers inward as it ascends then small opening at top. Could you help me solve this problem. 10”h x 6”dia/bottom x 3”dia/Top. The Taper should start 1/3 up from bottom if possible. Think of the police megaphones but standing up. The tapers has me stumped

wow amazing

Sir you the best help me very very much

How to do a drawing cone that been cut straight of at the top of the cone

Could you use the same method if it were not an angled top

what is the correct terminology for this layout? is it radial ?

You're saying to wrap the template around your pipe, then center punch it...ok, that's a given....the big part is ...using your soapstone to trace it the pattern....then cut it w/ the torch...the center punch mark s assure you that you'll stay on the line or follow the path in the event those soapstone marks get rubbed off...- very good vid...Dave..thanks..~

very very useful for my design heartly thanks to u sir

Thank you , You are brilliant

so good

Pls send howe is first what won th to do for this making

thankyou

I am horrible at math but somehow great at understanding architecture drawing so maybe I have a brain that has a dyslexia about calculating numbers just for calculating numbers sake but if I have to make something then I can attempt it with some degree of success. I have become great at determining angles etc by folding paper. Luckily this is all for crafting so I am not building a house, or landing an asteroid on the moon. I was able t do this by studying a 4 volume set for plumbing cutting their on parts.I guess it also helps that I sew and when I have to draw up an original pattern you are working from a flat pattern to a shaped object. Who knew the same skills would be used with plumbing and clothing construction. At least this is the first explanation that I have come across concerning calculations and cone etc. everyone wants to tell you how to calculate but they do not show you how to use raw measurements and draw it out. That is more useful for me as a crafter.

Thank you sir

can you post eccentric cone development pattern inner dia 1000 and 2000 h=1000

Hi Dave, Can you do a Flat Back Cone please?

😲 nice 👍🙂

Thank you from a handbuilding potter.

Hi sir please can you update how to make round elbow .

🙌👏

you can see from the side that the sides are down to low at least 3mm

awsome thanks

Sir, I need your help for the development book for the development of plates pl send me pdf file!

Where can I get an awesome compass like that?

sorry Dave but that's wrong you still need to use a true length measurement if that was on a 45° angel that would be way out

try cone layout program freekn rocks and provides dxf file

you must be found true lenght of generator line next transfer to development view!

Great video, I much prefer the hand method.

Good job I want to learn from you.

What are the measurements for the angle? You start the vid with out telling how to do the 1st part? Can someone help here?

Nice video , same application apply for just a basic cone ?

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Where did you find the metal engineer rule?

You didn’t transfer true length properly

DAVE I WOULD LIKE TO SEE YOU MAKE A MOONSHINERS COPPER STILL

You can even tell after you were done it was done wrong

You are doing the pattern incorrect, you need to bring the truncation lines out to the true length, otherwise the top angle will be incorrect.

Complete balls up , you are supposed to true length the radial lines from the side 🙈🙈🙈

Wow sorry to be negative however you are not even close to completing this layout correctly or accurately. Lines 2-6 on you front or what you call the side view are not true length, and how can you be accurate with out using drawing aids such as a tee squares and set squares. Math should be used to accurately determine your apex height ect. Setting your compass on 1/12 of the circumference and plotting them around your striking radius only leeds to accumulative error. One should work out the circumference of the base by multiplying the large diameter by pie 3.142 and measure this around the large striking radius. Once again I am sorry to be negative however you may well be miss leading students. Regards a boilermaker of 35 years. Not a carpenter

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Sorry wrong

Totally wrong......! Rubbish..!

This video is an incorrect and an inaccurate technique. The true lengths should be transferred to the right hand side by taking them perpendicular to the centre line.

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You didn’t transfer true length properly

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