Differences

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--- bed_mesh [2025/09/17 23:04] – dshoop
+++ bed_mesh [2025/10/03 20:04] (current) – dshoop
@@ Line 5: / Line 5: @@
 {{ :bed_mesh.png |}}
-The bed mesh is a probed map of the surface of the bed plate, normally automated and with a z probe, that describes how **//flat//** (not how **//level//**) the surface of the bed is above the level plane. It's a map of the hills and valleys decribing the warpage of build surface. The bed mesh variance, shown above is what we care about, as it should be less than 2x the layer height.
+The bed mesh is a probed map of the surface of the bed plate, normally automated and with a z probe, that describes how **//flat//** (not how **//level//**) the surface of the bed is above the level z-plane. It's a map of the hills and valleys decribing the warpage of build surface. The bed mesh variance, shown above is what we care about, as it should be less than 2x our layer height.
 It's often erroneously called "ABL", "Automatic Bed Leveling", yet has nothing to do with the bed being level.
+It is important to realize that the Z axis scale is grossly exaggerated and that minor variations appear dramatic.
 ==== Generating a Bed Mesh ====
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 Yet it shouldn't be grossly warped if we can help it and what we can change is the amount of tension of the bed screw springs pushing up on the plate. Too much, or too uneven, tension can cause the plate to buckle. This can be fixed.
+If the bed mesh seems warped at the plate edges, is buckled up or seems to be too warped, try loosening all the bed screws all the way off, then re-attaching them, tightening them only 1 1/3 full rotatations and re-run SCREWS_TILT_CALCULATE to level the bed and re-run a bed map and re-evaluate.
+[[Silicone spacers]] have a better tension profile, and more consistency, then the bed springs and make a cheap improvement.
 ====Articles about the Bed Mesh ====