为了解决在有底沙的鱼缸里喂下沉鱼粮的困扰，设计一款简易的辅助喂食器。

大致分为管体（Part B）/ 喂食嘴（Part A）/适配不同缸壁玻璃厚度的变径（Adapter）。

管体内径5mm，我平时喂高够力的育成饲料，直径2mm左右的长圆柱体，不会卡住。如果需要更宽的内径可以自行修改。

管体长度我预设了10/15/20cm的长度，如果需要修改可以在solidworks里修改全局变量。

Part B原生可以卡在7mm厚的玻璃上，为适配不同缸壁玻璃厚度，Adapter也预设了7-6/7-5/7-4mm的卡口。

如果需要修改可以在solidworks里修改全局变量。其实用胶条粘一下，硬纸壳垫一下就行了。

To solve the issue of feeding sinking pellet fish food in a fish tank with substrate, this little tool is designed.

It includ three main parts: Part A Part B , and adapters for different thicknesses of fishtank walls.

The lengths of the tube (Part B)  are pre-set to 10/15/20cm,but it can be adjusted by using Formula Functions in SolidWorks.

Part B is designed to  attach to glass about 7mm thick. Adapters with 7to6/7to5/7to4mm clips are provided.It can be adjusted by using Formula Functions in SolidWorks.（ Just use tape or cardboard will work perfectly）

全局变量如图：L为管长，thickness为缸壁厚度。

Global variables are as follows: ‘L’ for tube length, ‘thickness’ for tank wall thickness.

我使用TPU 95A打印Part A，来保护我五块钱的兰寿。但所有边角都圆角处理了，理论上PETG也不会伤害到鱼鱼。

Part B 和 变径都可以使用PETG.

I use TPU 95A to print Part A to protect my precious $1 Ranchu goldfish. 

But all edges and corners are rounded,  PETG shouldn't harm the fish either.

Part B and adapters can be printed using PETG.