Guitar centerline finder for neck set and bridge positioning

My take on a centerline finder

For a proper neck set and bridge positioning on my guitar builds a want to build my one centerline finder. This project I designed in Autodesk Fusion 360. The files can be downloaded under http://a360.co/2awxJeE.

01_Centerline_finder

The Fusion 360 construction include all parts except the six woodscrews for mounting the nuts and the bolts.

02_Design_fusion_360

The tool paths for milling I also generated in Fusion 360.

03_Milling_Path

The first part I have build is the ruler. This part is milled out of transparent acryl.

04_ruler 05_first_side 06_cutting_raw_wide

The milling I have done on my CNC that’s controlled by Mach3.

07_milling_wide 08_slotting

Beside centering the neck I decided to add a scale to check an realign the bridge if needed.

09_cutting_scale

The centering will be done by four bolts, that are sliding in four angled slots. Each pair of this bolts are pushed by a t-glide in a center slot through links. One of these links on a pair has a washer, so it’s laying parallel to the surface of the ruler.

10_links 11_washers 12_milling_links

The T-Glides I made out of plywood. I milled a pair out of a 20 mm thick peace.

13_t-glides 14_milling_t_glides

On the band saw I have cut the peace’s out.

15_cutting_t_glides_bandsaw

The bolts and the nuts I turned out of a round peace of beech wood.

16_bolts17_turning_bolts18_nuts 19_turning_nuts

With prethreading the T-Glide I’ve made sure, I can lock the centered position.

20_prethreading_t_glide

With gluing in the wood screw in the nut turns always with the screw.

21_glue_in_set_screw

The first Test:

22_test_centerline_finder

The same reading, as I measured with a stared edge, but a lot faster.

23_reading_centerline_finder

The hole build on a YouTube Video:



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