1.Draw a grid on the PPC paper in increments of 50 mm with data for origin adjustment.You can download origin adjustment data from here.Use origin adjustment Data at your own risk.

2.Next, place the square gauge on the paper and check whether the position of 0 mm, 50 mm, 100 mm, 150 mm is not differenced.If it is not differenced, fix the square gauge with masking tape.

3.Drilling 4mm.

4.Remove the square gauge and Drilling the 6mm for the M4 insert nut.

5.Made spot faceing 8.5 mm to sink the insert nut.

6.The M4 insert nut screw in bord.

7.Made spot faceing 12 mm to sink the head of M4 cap screw.

8.Attach the square gauge with M4 low head cap screw.

9.Finally draw the grid with the data for the origin adjustment and confirm that each position matches.

10.Although the inner scale is carved on the long side of the gauge, it is not on the short side. So fill in the inner dimensions with the Tepra.

11.Made square guide and straight guide with MDF board. The material is 4 mm MDF, 6 mm neodymium magnet and 1 mm thick aluminum plate.

12.The corner is miter joint. Put aluminum joint to increase the strength. The groove was just 1 mm wide when cut with jig�@saw teeth.

13.This is 1 mm thick aluminum plate bonded.

14.Use 3 neodymium magnets to increase adsorption strength.