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Shape Defects
![edge wave.png](https://static.wixstatic.com/media/b42c37_2a5bde28908746e5aff0f35c2e9ecac3~mv2.png/v1/crop/x_148,y_11,w_637,h_479/fill/w_365,h_271,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/edge%20wave.png)
Edge Wave
Edge wave occurs when the edges of a coil or plate are longer than the center of the coil/plate.
![center buckles.png](https://static.wixstatic.com/media/b42c37_1fdace501f95480f8cf9b496b3832f62~mv2.png/v1/fill/w_369,h_272,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/center%20buckles.png)
Center Buckle
Center buckle occurs when the center of the coil or plate are longer than the edges of the coil/plate.
![coil set.png](https://static.wixstatic.com/media/b42c37_8ca74889fd9c40cbb36c8c89f721de56~mv2.png/v1/crop/x_26,y_37,w_730,h_541/fill/w_365,h_272,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/coil%20set.png)
Coil Set
Sheets with coil set will keep the shape of the coil after uncoiling instead of laying flat.
![crossbow.png](https://static.wixstatic.com/media/b42c37_6a03b41ba7e34df58f6da177c898498e~mv2.png/v1/fill/w_369,h_273,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/crossbow.png)
Crossbow
Material with crossbow arcs across the width of the coil.
Center Buckle
Edge Wave
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