# Cant get prints to correct size

**URL:** <https://forum.lulzbot.com/t/cant-get-prints-to-correct-size/2652>\
**Category:** LulzBot TAZ\
**Created:** [December 21, 2015, 5:11pm UTC](https://forum.lulzbot.com/t/cant-get-prints-to-correct-size/2652 "2015-12-21T17:11:12Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![joshewing02](https://avatars.discourse-cdn.com/v4/letter/j/9fc29f/32.png) [@joshewing02](https://forum.lulzbot.com/u/joshewing02)\
**Post date:** [December 21, 2015, 5:11pm UTC](https://forum.lulzbot.com/t/cant-get-prints-to-correct-size/2652/1 "2015-12-21T17:11:12Z")

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So I have had a TAZ 5 for about a month now and love everything about the printer except when it comes to fitting pieces together. I have spent hours looking through forums and you tube for videos but I am hoping someone out there can help me.

Every thing I print the interlocks is so tight and never fits. Never Never Never. So I made a basic test cube in tinkercad. 30mmL x30mmD x20mmH I also made a 20x20x20 hollow cube and centered it inside. This way I could measure outside X & Y and inside tolerances. What I found was my printer is printing bigger then 30mm on the x & y by about .3mm and I was also printing to much material on the inside. my print is coming out as follows

30.32x30.28x20.02mm and the inside is measuring 19.81mm x 19.83mm x 20.002mm.

After this I did some research and looked into setting Estep properly. I adjusted this to 853.1mm in the firmware which is as close to perfect as I can get when dispensing 100mm of filament. Reprinted the test cube and now it is closer but still not close enough. I can post the exact measurements this afternoon but I don’t know what I’m doing wrong and how to fix it. I have been trying to print this for my 6 year old

[https://www.youmagine.com/designs/star-wars-lightsaber-complex-version](https://www.youmagine.com/designs/star-wars-lightsaber-complex-version)

I had a buddy print it and the pieces snap together and twist lock no problem on his ultimaker. I for the life of me can not get these things to print and fit. I break them every time by trying to force them into each other. How can I as a noob calibrate this printer to print a 20x20x20 cube? Do I need to calibrate x/y? I assume those are set correctly. I have never changed anything besides the Esteps.

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