Nấm vá đồ có chỗ cất và đế cán rộng

Designed in FreeCAD. FreeCAD file provided to allow modifications, such as a longer stem, thicker or thinner bulb, different mushroom cap curvature, etc.

Print at least the cap with fine layers and plenty of top layers, and enough perimeters that the top section of the stem has no infill. You want enough top layers to sand it down smooth after printing, so that the needle doesn't catch on layer lines. No supports needed when printed with 0.12mm layers in ABS. Acetone vapor smoothing optional but possible with ABS.