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I want to model the safety fence on a floating dock which is constructed with steel tubes welded together. I have created the top and sides and now want to model the extra tubes as per the image below. Watching a youtube tutorial on joining cylinders I feel that all I need to do is to add loop cuts at the appropriate places, select the relevant face(s) and then extrude along normals but can't work out how to add the loop cuts in the correct locations and add two at each place the width of the cylinder. I am not interested in modelling weld marks. Mayber it would be easier just to add extra (cylinder) meshes?

Firstly a photo of the real object - enter image description here

Now what I want to do

enter image description here

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  • $\begingroup$ As all the tube is of the same dimension, the shipped add-on Add Mesh: Extra Objects > Pipe Joints becomes a quick route. That reduces the problem to cutting loops in the original in the right places, snapping, extruding and welding. No time to answer just now, but will get to it of someone else doesn't. (The original is 0.025 radius, 8-sided) $\endgroup$
    – Robin Betts
    Commented Mar 9 at 12:08
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    $\begingroup$ Thanks Robin. I tried your suggestion but (not having used pipe joints before) had problems right from the starts as 'horizontal' pipe had incorrect geometry. Anyway moonboots has offered a suggestion below which looks ok. $\endgroup$ Commented Mar 10 at 3:50
  • $\begingroup$ I'll leave it to the maestro, then :) ( I did manage to do it reasonably quickly.. but a description of all the sneaky selection/snapping/modifier tricks would be quite lengthy. And @moonboots usually finds the simplest way to good topology for subdiv. much more quickly than me :) ) $\endgroup$
    – Robin Betts
    Commented Mar 10 at 8:07

1 Answer 1

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You could duplicate this edge loop:

enter image description here

Extrude it until it crosses the bar:

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Select the horizontal cylinder and press CtrlF > Intersect (Boolean):

enter image description here

Choose Union in the Operator Box:

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Select all and press M > Merge by Distance so that the overlapping vertices merge, add some support edge loops, slide the edge loops, slide with GG, press E to parallelize to the next edge loop, F to parallelize to the opposite:

enter image description here

Animated gif:

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My Snap To panel settings:

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