First print, first enclosure. 第一个打印，第一个音箱。

First print was definitely a surprise. I'm expecting some hick-ups and yet the print came out just nice. With proper geometry and details.  The only problem here is the labyrinth part of the design were covered by the 'support' structure. Which i only learn about it after read through the manual (download from PP3DP) which i haven learn before starting this print. I should have set the support to >20mm area so the small tunnel will not have the support structure in it as it won't be needing it. Which i had to pause it half way to remove the support structure so it won't cloak up the air flow. 

 Almost done after almost 2 hours. I'm using 0.25mm layer hight with normal printing speed (which i presume 60mm/sec) I did notice the round side of the enclosure warp up a bit (~1.5mm) After googling around. I found out that ABS tend to shrink when it start to cool. So the way to minimize the warping problem is let it cool slower. And that's by increasing the surrounding air temperature or by adding a shield to block out any stray air that might blown on the printouts.

All and all, the print came out fine and i have installed the 40mm driver unit and give it a go. The bass were obviously tighter and deeper compare to the 'cheap plastic leaky box' it came with with less noise and cleaner vocal. But the down side was there's a certain degree of 'box' sound coming out from the port. My guess was the port was designed too wide to let the higher frequency escape the enclosure. Will try adding some sound damping material at the wall of the labyrinth later to see if there's any changes.

第一次打印出来的结果让我充满了惊喜。我原本以为一定会出现很多问题的，但是结果打印很顺利。如果硬是要挑问题，那就是我的问题了。啊～ 第一张照片可以看到，迷宫箱的迷宫里被打印软件的‘支撑结构’布满了。这个肯定会阻碍到气流。查了查‘使用手册’ (*在 PP3DP下载）。原来可以把支撑设定调整到比较大的面积才需要，那么迷宫箱的小漩涡就不会出现支撑结构了。 结果我得在打印一半的时候暂停来清除掉支撑结构。

这次我用的设定是 0.15mm 精度，普通速度 （我猜大约在60mm／秒左右）打印期间我发现到箱子圆孤部位会往上翘，大约 1.5mm～ 打开谷歌～ 啊。原来ABS材质在冷却的时候会有一定的收缩习性。所以要减少翘尾的问题，就需要让ABS慢慢的冷却。其中一个方法就是把打印机的四周围围起来。减少外在的冷空气流通吹到模型上面。

整体来说，音箱打印出来的品质不差。我把40mm的单元安装了上去后试听。效果比单元原来充满漏洞的箱子好很多。杂音少了很多，中低音比较扎实。人声也比较干净。不过，美中不足的是可以听到我们所谓的‘箱声’。就是说有中音从迷宫中逃脱出来。或许迷宫的通道太过宽阔了。待会会贴些吸音材质进去看看会不会有差别。