# Over/under-sized features on prints **URL:** \ **Category:** Snapmaker 2.0 (3-in-1)\ **Created:** [April 2, 2021, 2:48pm UTC](https://forum.snapmaker.com/t/over-under-sized-features-on-prints/17503 "2021-04-02T14:48:23Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![clewis](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/clewis/32/3255_2.png) [@clewis](https://forum.snapmaker.com/u/clewis)\ **Post date:** [April 2, 2021, 6:06pm UTC](https://forum.snapmaker.com/t/over-under-sized-features-on-prints/17503/2 "2021-04-02T18:06:17Z")
Are the dimensions consistent wrong through the entire print, or only on the first/last layer? I’ve printed a few of the FDM 3D Printer Assessment test from the [3D Print Guide](https://forum.snapmaker.com/t/3d-print-guide-walk-through/5945), Section 4.6 (I can’t link directly to the section, just the post). My first attempt received a score of 1 on the [Fine Negative Features](https://github.com/kickstarter/kickstarter-autodesk-3d/tree/master/FDM-protocol#3-fine-negative-features) section. After printing a temperature tower and adjusting my retraction settings, I got it up to a 4.5 (I can remove the tightest pin, but only be lifting the pin out; I cannot drop the pin through the hole). That was printed with a 0.1mm layer height. The hangup on the tightest pin is when the top layer of the pin is flush with the hole. When I feel the pin, it is slightly mushroomed out on the top. If I trimmed up that top layer with a scraper, I’m sure if would fit through just fine. If I wiggle the pin in the hole, I can feel a small amount of slop. I only have analog calipers, so I can’t measure the pin and hole more accurately than about ±0.5mm. That indicates that I can print in the X/Y axis with a max inaccuracy of +0.1mm. Most of that is either the top or bottom layer. For a [project](https://www.thingiverse.com/thing:3594960) that I wanted very tight fitting pieces, I scraped the bottom layer with a metal ruler to remove the burr. --- _[View the full topic](https://forum.snapmaker.com/t/over-under-sized-features-on-prints/17503)._