Lithophane Lamp Frame

Designed to work with this light: https://www.amazon.com/Darice-Accessory-Cord-Light-Brown/dp/B0054G66HG/ref=pd_cp_60_1?pd_rd_w=dkeZc&pf_rd_p=ef4dc990-a9ca-4945-ae0b-f8d549198ed6&pf_rd_r=XZ1MYAN8TRZCEZ0MSR4W&pd_rd_r=c1987b85-a2ca-11e9-8f67-8fa59547a07e&pd_rd_wg=PgVLb&pd_rd_i=B0054G66HG&psc=1&refRID=XZ1MYAN8TRZCEZ0MSR4W

Lithophane being framed is roughly 270 mm across, if scaling this, don't scale lamp portion. Step file included for scaling purposes.