And modern Ogee router cutters usually have two opposing quarter circles - at least the ones I own do.
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Yes. I usually see them listed as Roman ogee in the catalogs and I always wondered what made that specific. For a while I thought it was cyma recta vs cyma reversa, but nope itās the circular arcs.
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Yes, Hahahahahahahah! Beastly! Spell Check problem. I have to watch it carefully.
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Beginner question: any change of getting such plans but on metric units?
Even when Aaron was dodging all the math, I had a hard time understanding the measurements
The plans are actually unit agnostic. Everything is a ratio, so you can use whatever units you like!
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Iā¦frankly donāt know what that means.
Then, again Iām not the brightest when it comes to math
The measurements on the plans are all multiples or divisions of the diameter at the base. So, you pick whatever is the desired base diameter in whatever units you like and then everything else is either a multiple or a fraction of that diameter. Almost no math is required if you remember that you can draw an edge a particular length and then use the right-click divide command to split it into that many equal sections. Aaron did that multiple times in his video. The only potential issue is that some of the shapes might be somewhat small and have issues with SketchUpās small edges tolerance unless you draw it oversize and then scale everything down to target size when finished.
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You can use flowify twice to produce a custom scaling in the xy-plane. Itās a bit cumbersome, but the basic principle can be seen in this highly exaggerated image:
Here is a sketchucation thread fleshing it out a bit more
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I was thinking of Flowify as the tool for the job. Correct my memory if Iām wrong, but wasnāt Flowify created by guys who do classical architecture modeling? I seem to remember it used to apply an egg and dart detail around curves as an example of what it did. Necessity being the mother of inventionā¦
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entasis_test.skp (1.8 MB)
I was wondering the same thing this morning.
I took a straight column and put a few cuts in it (I used the knife tool in Artisan- one of my favourite tools!).
In parallel view, I selected the cuts themselves and scaled them around the centre using the jpg behind as a template. This worked surprisingly well but the top looked a bit weird. I did the same again but this time selected the top section down to the first cut and did a box taper on that first and carried on with scaling the cuts for the rest of the column.
This worked pretty well. I can see that the geometry at the bottom of the box taper hasnāt merged properly with the rest but I think with more care I could make that work.
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entasis_merged_correctly.skp (1.8 MB)
I got the top to merge correctly with a bit of tweaking.
Actually, if Iād put the cuts at the right heights it might have looked like joints in a stone column. The joints could be expressed with a chamfer or rebate.
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You are quite right! Flowify was originally made to handle controlled organic shapes found in classical architecture, so while a corinthian capital is best handled using subD an ionic capital is probably best modelled with normal meshtools due to its ālawboundā shapes. Below is an image of an ionic capital modeled in Sketchup (rendered in keyshot). Itās done with basically just two custom tools. Flowify and another tool called Sweepify which is a sort of followme with two rails instead of one.
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Awsome! I havenāt heard of Sweepify, I must say.
I hadnāt heard of that either.
Canāt find it in any of the usual places either.
You donāt have a link by any chance?
No, sorry. It was never published. We just made a concept version (= fragile, no UI etc) to be able to model the ionic capital. However, TIG has something similar called Extrude Edges by Rails.
The reason for reinventing the wheel is that you want control over certain parameters like how the profile is scaled between the two rails. Also, for sweeping a volute you want two rails mostly on top of each other which means that the rails need to be in their own groups and so on.
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Polydramatic!
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Thatās a good call. I actually had Extrusion tools but hadnāt spotted that Extrude Edges by Rails could do that. Iāve been having a play with it just now. Itās awesome.
Your volute and capital are gorgeous!
Beginner here, wondering why Iām getting these extra borders when subtracting the flutes group from the central column
I was following along Aaronās modelling and I believe all my steps match up to this point, minus some flutesā height mismatches.
I know I can go in, interface them individually and then delete the extra geometry.
But just wondering why, given that I rotated the flute 18Āŗ as shown and made 19 copies.
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Looks as though you had the flute ācutterā a bit too far towards the centre of the columns, before you copied it round.
How did that happen? Well, that depends on how you positioned the first one on a radius from the column centre. Maybe you matched its centre up with the middle of a column circle segment instead of an endpoint of it?
Aaron carefully positioned his first cut to make an edge on the flute line up exactly with an edge in the circular column.
Itās close in your case, but not quite right. Iād say draw it again.
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Thatās one of the things I found odd.
I followed along step by step, when it came to moving the flute into the central piece, mineās position was off. The bottom of the flute went further down than Aaronās did and further inside into the column than his, even though I snapped and dragged from the same point.
Well, now I compromised and just deleted that extra geometry 1 by 1.
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