# Intersection trouble

**URL:** <https://forums.sketchup.com/t/intersection-trouble/77498>\
**Category:** 3D Printing\
**Tags:** help\
**Created:** [September 22, 2018, 5:37pm UTC](https://forums.sketchup.com/t/intersection-trouble/77498 "2018-09-22T17:37:15Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![zero](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/zero/32/56234_2.png) [@zero](https://forums.sketchup.com/u/zero)\
**Post date:** [September 22, 2018, 5:37pm UTC](https://forums.sketchup.com/t/intersection-trouble/77498/1 "2018-09-22T17:37:15Z")

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For much of my work I 3D print objects that intersect with one another, usually cylinders.  
Usually I can get away with it if the cylinders intersect with flat surfaces, but if I try to do it with another round surface I get all kinds of tearing and missing pieces that are virtually impossible to fix by hand.  
Is there an addon I can get to do this more effectively?  
Is there something I’m doing wrong?  
Any help would be appreciated.

 ![58%20PM](https://global.discourse-cdn.com/sketchup/original/3X/8/4/84c9d9dcfff879fe2f8485c65ff0113cd04afd07.png)

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**Author:** ![TIG](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/tig/32/198_2.png) [@TIG](https://forums.sketchup.com/u/TIG)\
**Post date:** [September 22, 2018, 5:41pm UTC](https://forums.sketchup.com/t/intersection-trouble/77498/2 "2018-09-22T17:41:23Z")

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SketchUp’s core code can’t cope with tiny geometry \< 1/1000"  
To sidestep this you should use ‘The Dave Method’…

> [@The Dave Method](https://forums.sketchup.com/t/the-dave-method/49720):
>
> The Dave Method is the clever use of components popularized by @DaveR to avoid the tiny face issue. Sketchup fails to form faces when edge segments get down around the 1/1000" mark. However, tiny faces can exist so the workaround has generally been to scale up your geometry, edit it, then scale back down. This works, but can lead to some issues. The Dave Method leverages the power of components to make life easier. The basic concept is, you start with a component set at the size you want, t…

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**Author:** ![zero](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/zero/32/56234_2.png) [@zero](https://forums.sketchup.com/u/zero)\
**Post date:** [September 22, 2018, 5:46pm UTC](https://forums.sketchup.com/t/intersection-trouble/77498/3 "2018-09-22T17:46:38Z")

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My god,  
it’s so simple.  
I kind of hate it.  
Thank you.