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I'm trying to create a low poly bathtub in Blender that I intend to print off using a Resin 3D printer.

I'm using the Solidify modifier to give the walls sufficient thickness to print, and the Subdivision surface modifier to smooth the low poly surface.

This if perfect for the sides of the bathtub which are nice and smooth despite it being low poly, but I want the top and bottom to be a perfectly flat surfaces. Essentially, I want to create a rim and a base.

Other than putting in multiple loop cuts is there any way that I can force the top and bottom to be flat rather than being rounded off by the subdivision modifier?

I've deliberately left the bottom of the tub open because I'm going to place a false floor in it to represent the water and I want to be access it from underneath.

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The bottom image shows a rounded base, I need it to be flat.

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2 Answers 2

Reset to default
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In Edit mode, select your top and bottom edge loops by Alt+Left clicking on them, press N to bring out the side menu, and in the Item tab, set Mean Crease to 1.

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  • $\begingroup$ How did I not know this? $\endgroup$
    – Aaargh Zombies
    Sep 5, 2021 at 18:13
  • $\begingroup$ You learn every day :) $\endgroup$
    – Geri
    Sep 5, 2021 at 18:16
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Select the edges you want to crease, press Shift + E to activate the Crease Tool and move your mouse to set the amount of creasing. A value of 1.0 means 100% creasing. You can also type in values with your numpad and press Enter when done.

enter image description here

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  • $\begingroup$ This also looks like it could be a good answer, could you please explain this a little more. $\endgroup$
    – Aaargh Zombies
    Sep 5, 2021 at 20:09

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