窗口式鸟类喂食器

FDM机器上3D打印的模型。未显示专用吸盘。请参见此处；https://www.amazon.co.uk/Packet-suction-separate-standard-suckers/dp/B005JSF0CG/ref=sr_1_1?crid=2597BA6IHAWF4&关键词=Bescoute+Packet+of+4+40mm+%28刚好+超过+1+1%2F2%22%29+吸盘+带+M4+螺钉+%286mm%29+带+单独+脊形+螺母%2C+标准+吸盘%2C+吸盘%2C+吸盘%2C+普通%2C+透明+乙烯基+PVC+吸盘+带+螺钉；qid=1643989499；sprefix=Bescoute+包装+4+40mm+刚刚+超过+1+1%2F2+吸盘+带+m4+螺钉+6mm+带+独立+脊形+螺母+标准+吸盘+吸盘+吸盘+普通+透明+乙烯基+pvc+吸盘+带+螺钉%2Caps%2C50；sr=8-1