# Squared cuts are not eaven sides areare not tje same sized for like 1/2 inch

**URL:** <https://forums.maslowcnc.com/t/squared-cuts-are-not-eaven-sides-areare-not-tje-same-sized-for-like-1-2-inch/9688>\
**Category:** Uncategorized\
**Created:** [April 28, 2019, 11:31pm UTC](https://forums.maslowcnc.com/t/squared-cuts-are-not-eaven-sides-areare-not-tje-same-sized-for-like-1-2-inch/9688 "2019-04-28T23:31:06Z")\
**Posts on this page:** 1\
**Page:** 3

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**Author:** ![madgrizzle](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/madgrizzle/32/1372_2.png) [@madgrizzle](https://forums.maslowcnc.com/u/madgrizzle)\
**Post date:** [November 19, 2019, 6:45pm UTC](https://forums.maslowcnc.com/t/squared-cuts-are-not-eaven-sides-areare-not-tje-same-sized-for-like-1-2-inch/9688/41 "2019-11-19T18:45:29Z")

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I think it’s in this thread.

> [@Smaller size Maslow](https://forums.maslowcnc.com/t/smaller-size-maslow/426):
>
> Hi. At the moment I´m a bit size constrained. I was wondering it it would be possible to build out my Maslow to a smaller scale for the time being. Maybe 1/2 size? Then later, once I have more experience and room rebuild Maslow to full size. Any advice?

This script is intended to tell you where your limits of accuracy are based upon the dimensions of your frame. It’s not really intended to tell you if your machine will produce straight or curved lines.

The accuracy of the maslow depends upon the kinematics model the controller uses to convert x,y coordinates to chain lengths. If the model doesn’t account for all the equations that govern the system (i.e., chain sag, chain stretch, wrap around sprocket, etc.) or use the correct coefficients for those equations (i.e., the calibration parameters), then results won’t be as intended. It’s hoped that holey calibration kinematics model will get us closer than the current model and that we can achieve accuracy high enough that it doesn’t really matter how ‘straight’ a line is. In reality… and this might be a bit deep… with how the machine works, every ‘straight’ line will really be some form of an arc… the goal is to use the kinematics model and calibration such that the curvature of the arc produced is as close to zero as possible. If a straight line from one side of the board to the other results in an arc with a 0.5 mm curvature (its 0.5 mm lower or higher at the center than the two ends) that’s within the ultimate accuracy **goal** of the machine.

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