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Poor Quality Decals


LenseOnLife

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Hi,

 

I'm back - and starting at the very beginning. Decided to start with cylinder type models, but the results are not consistent. The problem is with the top surface using planar decals.

 

Looking at the attached photo you can see 2 poor quality decals and I can't work out what I'm doing wrong :facepalm: and 2 that are OK

 

CorruptedSurfaces.jpg

 

For each, I started with the right hand outline, did the flip/copy/attach and then used the lathe. The breadboard (bottom left) probably had the most complex shape and yet turned out really nice. The only other one which turned out OK is the middle one which was a basic cylinder - nothing complex at all. No doubt I'm making a really basic mistake in the process but I can't work out what I'm doing wrong..

 

Anyone got any ideas on what I'm doing wrong - or how to work out where the problem is?

 

Thanks for any assistance,

 

Oliver

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In general it looks like you have internal patches / 2 patches above eachother there...

 

Could you show a wireframe? Just for testing, you could click on one point on the "poor"-looking patch and drag it away. If you see another one below it, there is the problem.

 

See you

*Fuchur*

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  • Hash Fellow

Another possibility causing the bad result is doing a lathe when the "center" CP is either exactly on the center axis or crossing past it.

 

The center CPs of the lathe shape should be just a hair short of reaching the center axis.

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This doesn't specifically address your problem, which others have answered well but because you are using A:M we have an alternative means to decal in situations like this. Specifically, anything that can be lathed can easily usually be lathed with 5 cross sections which allows us to close the ends with 5 point patches.

 

Here are two examples, coin and character spinner. In the latter case the decals are placed on two 5 point patches (click on image or click here to see it spin/animate).

 

The underlying point being that there are several ways to create a patch that can be decaled.

Penny 5 point patch decaling.png

CharacterSpinner.gif

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In general it looks like you have internal patches / 2 patches above eachother there...

 

Could you show a wireframe? Just for testing, you could click on one point on the "poor"-looking patch and drag it away. If you see another one below it, there is the problem.

 

See you

*Fuchur*

Hi,

 

You're quite right. I clicked on one of the CPs and there was another one below - in fact there is what looks like another copy below.

 

Before going any further - I'm heading back to basics and try to work out why I have these copies - thanks for the heads up, great to have something to mull over instead of belting holes in the wall with my head.

 

Oliver

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Still having difficulty

 

One suggestion was to set the left hand CPs slightly off-centre - which I did, and then did the Copy / flip /Attach

 

ObjectAfterCopyFlipAttach.jpg

 

I then did the lathe action

 

Object1AfterLathe.jpg

 

It looks fine, but then I just checked a couple of CPs by grabbing and moving them and I still have extra faces superimposed on each other.

 

ObjectAfterCopyFlipAttach.jpg

 

I also saved the object after each procedure which I'm also uploading in case someone can see what I'm doing wrong.

 

Object1AfterCopyFlipAttach.mdl

Object1AfterLathe.mdl

Object1AfterMoving2SuperimposedCPs.mdl

 

The question now is - how do I stop these extra faces being created when I do the lathe operation

 

Thanks all for your suggestions - maybe I'm not understanding them and/or implementing the suggestions

 

Cheers and thanks for your help,

 

Oliver

 

 

Object1AfterMoving2SuperimposedCPs.jpg

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I believe you can just use the lathe tool - no need to cfa first - that is what is causing the problem. Here's a simple example screen capture

 

Note that I peaked the splines before I hit the lathe

 

selected only one cp (any cp) - then hit the lathe tool

 

then I closed the top, bottom holes. Now you can decal the top and bottom with planar decal, and the cylinder part with a cylindrically applied decal

lathe.mp4

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  • Hash Fellow

Still having difficulty

 

One suggestion was to set the left hand CPs slightly off-centre - which I did, and then did the Copy / flip /Attach

 

attachicon.gifObjectAfterCopyFlipAttach.jpg

 

 

A lathe outline should only be on one side of the axis. It will get swept 360° around the axis to make the other side when you lathe it.

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I believe you can just use the lathe tool - no need to cfa first - that is what is causing the problem. Here's a simple example screen capture

 

Note that I peaked the splines before I hit the lathe

 

selected only one cp (any cp) - then hit the lathe tool

 

then I closed the top, bottom holes. Now you can decal the top and bottom with planar decal, and the cylinder part with a cylindrically applied decal

Hi Nancy

 

So Simple!!! and makes sense once I think back about what I was doing

 

Tried to like this reply but it seems that I've reached my quota of positive votes for the day???

 

Thanks,

 

Oliver

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