# Looking for input on the X-50 stiffy (Journeyman)

**URL:** <https://forum.onefinitycnc.com/t/looking-for-input-on-the-x-50-stiffy-journeyman/23844>\
**Category:** Original/PRO Series (Buildbotics) (Gen 1)\
**Created:** [December 5, 2023, 6:48pm UTC](https://forum.onefinitycnc.com/t/looking-for-input-on-the-x-50-stiffy-journeyman/23844 "2023-12-05T18:48:10Z")\
**Posts on this page:** 1\
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**Author:** ![TMToronto](https://avatars.discourse-cdn.com/v4/letter/t/7ea924/32.png) [@TMToronto](https://forum.onefinitycnc.com/u/TMToronto)\
**Post date:** [December 5, 2023, 7:37pm UTC](https://forum.onefinitycnc.com/t/looking-for-input-on-the-x-50-stiffy-journeyman/23844/3 "2023-12-05T19:37:11Z")

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I have a Woodworker X50, and recently added the 3rd rail.  
In anticipation of the switch, and to see the difference if any, I measured deflection at 3 locations on my machine, applying push/pull force (max 50N) in both X and Y direction. I did the same after the installation of the 3rd rail. Deflections were measured using a 0.002mm increment dial test indicator, and video recorded for more accurate reading.

Using software I created scatter plot graphs for deflection (microns) and applied force (N in 5 N increments).

Results showed the 3rd rail reduced machine deflection in all locations and directions by about 25 - 45%.

The graph below shows the deflection at the bottom of the Z20 assembly when force is applied in the Y- direction, with and without the 3rd rail. NOTE: all axes were positioned in the middle of their max travel, with motors on.

 ![Screenshot (656)](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/3X/7/5/7541ebecabec00b1d20786c439bab2c980545c74.png)

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