My decidedly low-tech frame truing jig.

3D Printing
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1

My decidedly low-tech frame truing jig. :slight_smile:

As it turns out, the diagonal of 520mm is almost exactly 29 inches. This is good as none of my yardsticks have metric markings.

Once I have one side measured, the square sides on the plastic jig pieces can be slammed together, and I can be pretty sure the two sticks have the same spacing (at least within a few tenths of a millimeter).

When I dropped the jig slots over the extrusions, they fit pretty near exactly. Seems I may have got something right.

(I expect that someone will have a more-clever approach to this. This is the best I came up with on first attempt.)

Downsized the diagonal braces slightly so I can print two at a time (on my printer).

Then wasted hours trying to figure out why the prints were failing. Turned out the printer had somehow lost the Z-position, the head was tight against the bed, and almost no plastic could extrude. By the time the head stepped up in Z, the extruder gear had ground through enough filament to fill the teeth. No grip and no extrusion. Right. Onwards…

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7b71bd56df68ef353bf68fe091b2fde3.jpeg4048×3036 2.96 MB

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6b1bab08ffff99b614ed1abc738b61fd.jpeg4048×3036 3.22 MB

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8415a73910335ba97d8ba004dda7434f.jpeg4048×3036 2.83 MB

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8d3d2feccae032dbe2f4ddba2239a9a1.jpeg4048×3036 3.27 MB

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17c1d24f7c3658522eed4221311f0353.jpeg4048×3036 3.14 MB

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that white thing just gave me an idea of a clamp to square the printer :slight_smile:

3

Love this! If you build more than one, a frame jig may be worth it that holds all rails so you can just tighten the screws
Brook

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@Brook_Drumm Yes I did have thoughts of a more complex jig. But as it turns out, this goes together very easily and the simplest-thing actually works very well. Constructive laziness worked (this time).

5

Awesome!