ForMatter/Finishes/texture/Mold texture — pebble heavy / coarse
finish_texture_mt_pebble_heavy

Mold texture — pebble heavy / coarse

texture · textured · MT-11040, VDI 3400 ref 41–45, coarse pebble grain

The coarsest of the pebble-grain Mold-Tech textures — visible from arm's length, deep enough to read tactile, breaks up specular reflection completely. Industrial machine housings, the inside of a cooler, structural plastic where the texture is the material's announcement of itself.

Photochemical etch in the coarsest pebble family — Mold-Tech MT-11040 (Ra ~18 µm), VDI 3400 plates 41–45 (Ra 12–24 µm). Release with ~5° draft per side; sub-3° draft locks parts in. Hides flow lines, weld lines, sink marks, gate witness completely. Common spec on truck-bed liners, automotive underbody panels, industrial-equipment housings. Avoid on parts that need print or hot-stamp branding — the texture interferes with foil transfer.

character — coarse open texture, visible at arm's length, fully matte, industrial-tactile register.

Finish properties

  • leveltextured
  • subcategorymold-cavity texture (heavy pebble / orange-peel)
  • Ra (µm)18.0
  • applies topolymer

Second life

reversibilityzero on the textured surface — texture is in the substrate. Removable only by additional material removal or by overcoating to fill the texture.
blocks substrate recyclingno
renewabilitymoderate — re-texturing is possible at the cost of removing the original texture and any material below it. Sandblast and acid-etch textures can be re-applied by repeating the original process.

SSPC SP10 surface-prep standards; manufacturer abrasive-blast and etch-chemistry guides.

Citations

  • standard · VDI 3400 — Erodieren bearbeitete Werkstückoberflächen (mold-cavity texture reference plates).
  • standard · SPI/SPE Mold Finish Standards (Society of the Plastics Industry, AB-3).