# Please tell me why this happens **URL:** \ **Category:** SketchUp\ **Tags:** modeling\ **Created:** [July 3, 2024, 6:34am UTC](https://forums.sketchup.com/t/please-tell-me-why-this-happens/280263 "2024-07-03T06:34:57Z")\ **Posts on this page:** 8\ **Page:** 2
**Author:** ![miyu](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/miyu/32/215859_2.png) [@miyu](https://forums.sketchup.com/u/miyu)\ **Post date:** [July 3, 2024, 7:22am UTC](https://forums.sketchup.com/t/please-tell-me-why-this-happens/280263/21 "2024-07-03T07:22:34Z")
That’s true. CAD drawings definitely don’t have vertical and horizontal consistency. From now on, I’ll make sure to check before drawing. ↑Google Translate ---
**Author:** ![miyu](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/miyu/32/215859_2.png) [@miyu](https://forums.sketchup.com/u/miyu)\ **Post date:** [July 3, 2024, 7:26am UTC](https://forums.sketchup.com/t/please-tell-me-why-this-happens/280263/22 "2024-07-03T07:26:47Z")
I’ll try creating it again. Thank you! ---
**Author:** ![miyu](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/miyu/32/215859_2.png) [@miyu](https://forums.sketchup.com/u/miyu)\ **Post date:** [July 3, 2024, 7:27am UTC](https://forums.sketchup.com/t/please-tell-me-why-this-happens/280263/23 "2024-07-03T07:27:48Z")
Thank you for all the information you gave me! I’ll try and recreate it. ---
**Author:** ![jean\_lemire\_1](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/jean_lemire_1/32/665_2.png) [@jean\_lemire\_1](https://forums.sketchup.com/u/jean_lemire_1)\ **Post date:** [July 8, 2024, 3:41pm UTC](https://forums.sketchup.com/t/please-tell-me-why-this-happens/280263/24 "2024-07-08T15:41:03Z")
This problem can also arise if you inadvertently use the Move tool instead of the Push/Pull tool. With nothing selected, the Move tool may grab an endpoint and change its location. This may result in the creation of diagonal edges that connect this endpoint with other endpoints that are not moved. ---
**Author:** ![miyu](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/miyu/32/215859_2.png) [@miyu](https://forums.sketchup.com/u/miyu)\ **Post date:** [July 11, 2024, 8:52am UTC](https://forums.sketchup.com/t/please-tell-me-why-this-happens/280263/25 "2024-07-11T08:52:14Z")
> [@jean\_lemire\_1](#): > > This problem can also arise if you inadvertently use the Move tool instead of the Push/Pull tool. > > With nothing selected, the Move tool may grab an endpoint and change its location. This may result in the creation of diagonal edges that connect this endpoint with other endpoints that are not moved. アドバイスをありがとうございます。 それはモデルをグループにしていても、起こりうるエラーですか？ （グーグル翻訳） Thank you for your advice. Is this an error that can occur even if the models are grouped? (Google Translate) ---
**Author:** ![Wo3Dan](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/wo3dan/32/7450_2.png) [@Wo3Dan](https://forums.sketchup.com/u/Wo3Dan)\ **Post date:** [July 11, 2024, 10:28am UTC](https://forums.sketchup.com/t/please-tell-me-why-this-happens/280263/26 "2024-07-11T10:28:45Z")
@miyu > [@myspaceplanner](#): > > I don’t know why he suggested you disable this option. > [@myspaceplanner](#): > > I’m not sure I understand what you’re saying, but I think I agree with you anyway. Unchecking ‘Length Snapping’ helps to draw without a third snap function … e.a. to the lengths you enabled, other than the other two: to axes alignment and to already existing geometry. So you will make **less mistakes in future**. Unchecking does **not** correct your existing geometry. ‘Color by Axes’ helps to correctly draw new geometry aligned to axes (with 'Leght Snapping **off**!). It does **not** ensure you 100% that **existing badly drawn** geometry is ‘On Axis’ ---
**Author:** ![endlessfix](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/endlessfix/32/148757_2.png) [@endlessfix](https://forums.sketchup.com/u/endlessfix)\ **Post date:** [July 12, 2024, 2:54pm UTC](https://forums.sketchup.com/t/please-tell-me-why-this-happens/280263/27 "2024-07-12T14:54:20Z")
> [@myspaceplanner](#): > > go to Styles \> Edit \> Colors \> By Axis to check that the base of your plan is properly drawn. Color by axis has a tolerance, it’s not perfect. In some cases very fine errors show as on axis when they are not. The exact tolerance for color by axis false positives is discussed in several threads here on the forum. Especially in imported plans where errors can be very small, using labels with precision set high is the most reliable method of checking square. Length snapping is well known to be a potential source of errors in models and is really best left off. There is almost no benefit (it does not work like an invisible grid as many think it does) and it can cause very frequent errors, also discussed in many threads there. ---
**Author:** ![RTCool](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/rtcool/32/181048_2.png) [@RTCool](https://forums.sketchup.com/u/RTCool)\ **Post date:** [July 12, 2024, 3:12pm UTC](https://forums.sketchup.com/t/please-tell-me-why-this-happens/280263/28 "2024-07-12T15:12:59Z")
I used to see this problem _a lot_ back when I used the line work contained in imported DWG for modeling with. You wouldn’t think it should be a problem, but practical experience seemed to expose some vulnerability that I can’t explain. Maybe the import of floating point numbers and doing some math introduces some small error that gets exposed through later manipulation. [I still draw lots of stuff in a 2D program](https://forums.sketchup.com/t/do-you-still-draw-in-2d/170999), and import DWGs, but I mostly just use them as a tracing guide while drawing and modeling from scratch with native tools. Since I’ve been doing things this way, I haven’t had this problem in a while. One exception, though, is organic curves like contour lines. I use them straight out of the imported DWG. [Previous page](https://forums.sketchup.com/t/please-tell-me-why-this-happens/280263.md?page=1)