From Time to time I create some less common sheet metal fittings for HVAC, I figured I’d start a topic to keep this information together.
Any other Tinsmith’s out there?
This first fitting will serve 3 functions:
Plenum Take-off
90 deg Elbow
Rising offset.
Some of these types of patterns make Fusion through a fit.
We’ll start with a wildly hard layout, wish me luck.
Starting at about 9AM pst. Oct 4 2023
Here is the 3 in 1 fitting from the post above
I’ll fabricate this today and post some more pictures
I give this fitting about an 8 out of 10 for hardness to fabricate and assemble
Edit. Here is the fabricated fitting
I’m not sure how much equivalent footage this saves but quite a bit, maybe 50 equivalent feet ?compared to the three fittings it replaces.
Oh yeah… I’m sure he is… Bwahahaha That guy’s toes are plugged into the Internet! Offline! My Foot! Oh, wait, HIS foot!
I’m not buying…
However, on the matter of this topic, I see a LOT of merit to having a category like ‘Trade Related Advice’ with one of the subcategories “HVAC”. Whatcha think @langmuir-reilly @langmuir-aksel ??
seriously nice tinsmith work!!!
real fine example of what real work looks like…most of the stuff I see these days is so poorly put together I am surprised the air gets to the desired rooms…also duct seal and tin tape seem to hold the rest together
I have 5 register boots I need to make offsets for.
Here are the dimensions.
Qty 5 - 4"x10" 8.5"length 4"offset shortway ( which means it offsets on the small face of the fitting)
Qty 1 - 4"x10" 8.5"length 4"offset longway ( which means it offsets on the large face of the fitting)
Normally I layout and cut these by hand but I thought doing this with the Langmuir and Fusion 360 would make for a interesting video.
Ill live stream at 6:15am pst oct 11 2023
Live Stream Channels
I particularly liked your copy point to point with the rotate on pivot point. I am sure I will use that sometime. (Just before the 32 minute mark if others want to see)
Thanks for showing. As always, I may not ever need the fitting you make; but, you show various techniques that give a better understanding of what is possible.
Funny but my father was a tin knocker. He would have loved what you’re doing and would have been right in there learning Fusion and my Crossfire. Bringing back memories.
Do you have a video doing a simple 8" round to square or rectangle? I have looked at some other videos, but they have all been setting them up by hand. I have a used furnace someone gave me, and I was wanting to make an exhaust fan out of it. I guess I could buy one off the shelf… but I have a disease that makes me want to make everything… 
If @TinWhisperer can’t make you a video i can play around with how i would do it. What size square or rectangle are you thinking? I don’t play in the HVAC stuff much but know how to create different planes and loft to objects or on path. Getting it to unfold might be my challenge.
Hey Don! Thanks for the offer. Just wanting to go from a round I can attach an 8 inch round duct to… 8 inch round to 10 inch square or something similar.
Probably overly complex for what I am doing…
Should probably just buy one of these.
I would go buy one myself but great to learn how to loft and create separate planes which is how the first picture would be created. Multiple ways to connect planes also. This way if you do come across a custom size which you can’t buy off the shelf you can make it. Great video to have on the forum.
I did have a video but it was the older method before they added the loft command to sheet metal.
I can run through it sometime this afternoon.
So was the only difference be you would cut this by hand?
So I take there would be a fair amount of time savings being you made six.
Once you have the file there would be no drawing time the next go around.
Seems like this would be the way to go!
By request of @72Pony we’ll be making a square to round in Fusion 360
4:30PM PST
Live Stream Channels
copper square to round flats v1.f3z (536.8 KB)
Thanks for doing that!! I am going to have to watch that a couple of times.
