Now that you have a self built light box as good as any other how do I use it? ("umm define perfect?" if you're thinking this id say go back and restart from the beginning.) I put mine in like 4 inches ,from the edge.Ħ.you should now have 4 points exactly perpendicular to each other, take your strait edge and make lines between each point,ħ.From each edge of your rectangle measure into the rectangle 1/2 inch or one cm, make 2 marks on each edge.Ĩ.then draw out the lines you should now have a perfect rectangle inside a perfect rectangle position the glass exactly with one edge on the right line and one edge on the left line.ĥ.Slide the pane of glass up and down the desk to find your comfortable spot. do the same thing but for the top half of the desk this time.Ĥ. Mark a point on 0 and on the number you got when you measured your pane of glassģ. measure your pane of glass, divide that number by 2 and the number you get needs to be where you place the yard/meter stick. mark that out on the top and bottom of the drawing surface.Ģ. 1.Measure the exact with of your desks surface, Divide that by 2 ,and voila you have the exact middle area of your desk.
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