# Solid part issue **URL:** \ **Category:** Pro\ **Created:** [August 23, 2021, 3:44pm UTC](https://forums.sketchup.com/t/solid-part-issue/173421 "2021-08-23T15:44:09Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Johnidi](https://avatars.discourse-cdn.com/v4/letter/j/d07c76/32.png) [@Johnidi](https://forums.sketchup.com/u/Johnidi)\ **Post date:** [August 23, 2021, 3:44pm UTC](https://forums.sketchup.com/t/solid-part-issue/173421/1 "2021-08-23T15:44:09Z")
[Hawk\_connect.skp](https://forums.sketchup.com/uploads/short-url/bU89xeTlunpRe4YA8Fz1USEDY4U.skp) (43.4 KB) Any advice or help to make this part a solid? I am fairly new to Sketchup and can’s seem to get this part to print properly. The bottom detail is printing as a solid flat surface. ---
**Author:** ![DaveR](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/daver/32/7601_2.png) [@DaveR](https://forums.sketchup.com/u/DaveR)\ **Post date:** [August 23, 2021, 3:48pm UTC](https://forums.sketchup.com/t/solid-part-issue/173421/2 "2021-08-23T15:48:51Z")
You’re missing a face in the bottom of the groove on the bottom of the part. ![Screenshot - 8_23_2021 , 10_46_01 AM](https://global.discourse-cdn.com/sketchup/original/3X/e/2/e2bf121f39a352a44dc33f42f5dcc280bb990236.png) Use the Line tool to draw some lines between inned and outer circle to create the face. ![Screenshot - 8_23_2021 , 10_46_54 AM](https://global.discourse-cdn.com/sketchup/original/3X/e/9/e922aa42a9a715408fad5aa1e0717cbdcf9730be.png) Also correct the reversed back faces. Do not simply paint them with a material. That doesn’t fix the reversed faces. ![Screenshot - 8_23_2021 , 10_47_17 AM](https://global.discourse-cdn.com/sketchup/original/3X/7/4/74d465f42d539ad0fbf50741343ec5b270b8b475.png) ---
**Author:** ![Johnidi](https://avatars.discourse-cdn.com/v4/letter/j/d07c76/32.png) [@Johnidi](https://forums.sketchup.com/u/Johnidi)\ **Post date:** [August 23, 2021, 3:58pm UTC](https://forums.sketchup.com/t/solid-part-issue/173421/3 "2021-08-23T15:58:54Z")
Thanks Dave! ---
**Author:** ![Johnidi](https://avatars.discourse-cdn.com/v4/letter/j/d07c76/32.png) [@Johnidi](https://forums.sketchup.com/u/Johnidi)\ **Post date:** [August 23, 2021, 4:07pm UTC](https://forums.sketchup.com/t/solid-part-issue/173421/4 "2021-08-23T16:07:50Z")
Dave - how are the reversed faces corrected? ---
**Author:** ![DaveR](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/daver/32/7601_2.png) [@DaveR](https://forums.sketchup.com/u/DaveR)\ **Post date:** [August 23, 2021, 4:09pm UTC](https://forums.sketchup.com/t/solid-part-issue/173421/5 "2021-08-23T16:09:51Z")
Easiest is to select a correctly oriented face, right click on it and choose Orient Faces. Set the Face Style to Monochrome so you can see the blue back faces. This is a thing you should stay on top of as you are modeling. It’s generally easier to clean up as you go and correct face orientation is critical for 3D printing. ---
**Author:** ![DaveR](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/daver/32/7601_2.png) [@DaveR](https://forums.sketchup.com/u/DaveR)\ **Post date:** [August 23, 2021, 4:14pm UTC](https://forums.sketchup.com/t/solid-part-issue/173421/6 "2021-08-23T16:14:02Z")
A couple of other things about your modeling for 3D printing. First, you shouldeither choose a different template or at least change the units from Architectural to Fractional or Decimal and Inches or Millimeters. Then turn off Length Snapping. When I model for 3D printing I use meters as the units and leave the model huge. Your part would be modeled with a 1.5 meter radius. Then export the .stl with units set to meters and import into the slicer with units set to inches. I redrew your part that way and was able to use a larger number of sides for the circles. ![Screenshot - 8_23_2021 , 11_15_41 AM](https://global.discourse-cdn.com/sketchup/original/3X/e/8/e85e293b39ae5d35887bc98250e95b48f905c4cd.png) ---
**Author:** ![slbaumgartner](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/slbaumgartner/32/7302_2.png) [@slbaumgartner](https://forums.sketchup.com/u/slbaumgartner)\ **Post date:** [August 23, 2021, 4:17pm UTC](https://forums.sketchup.com/t/solid-part-issue/173421/7 "2021-08-23T16:17:39Z")
Note that there are some situations that defeat the logic of Orient Faces, particularly when two otherwise disjoint portions of an object meet along an edge. Of course, that situation violates the rules for a solid too. ![orient faces](https://global.discourse-cdn.com/sketchup/original/3X/5/f/5f84144194deb15935438679603c8d380bfd95ae.gif) ---
**Author:** ![Johnidi](https://avatars.discourse-cdn.com/v4/letter/j/d07c76/32.png) [@Johnidi](https://forums.sketchup.com/u/Johnidi)\ **Post date:** [August 23, 2021, 4:19pm UTC](https://forums.sketchup.com/t/solid-part-issue/173421/8 "2021-08-23T16:19:10Z")
Huge help! and thank you for the great advice and suggestions. ---
**Author:** ![Box](https://sea2.discourse-cdn.com/sketchup/user_avatar/forums.sketchup.com/box/32/235164_2.png) [@Box](https://forums.sketchup.com/u/Box)\ **Post date:** [August 23, 2021, 4:21pm UTC](https://forums.sketchup.com/t/solid-part-issue/173421/9 "2021-08-23T16:21:12Z")
That specific joint will fail to produce a solid too due to the zero point. It is a very close relative of the bowtie issue.