Polaroid Life - a new way to use 600 film on Sx70

有在玩Sx70系列的人都知道Sx70用的底片跟600型的主要差異在於背面底部中間的兩個凸出物。一般來說，會使用兩種方式來避免600型底片會卡住的問題：1. 將先前底片吐出的黑卡紙墊在底片下，然後一起塞入相機中，等進入一半後再將黑卡紙抽出，然後繼續塞入底片。2. 直接將那兩個凸出物除掉(斜口鉗剪掉或是刀片切掉, Photo1)。這兩種方法並不會很難使用，但卻很麻煩。試想，每次在塞入底片前都要事先除掉凸出物或是準備黑卡紙，這樣不是很麻煩嗎?實際上會造成卡住而塞不進去的原因在於底片室入口附近的一ㄇ字型鐵片Photo2，比較SLR680(可以直接使用600型底片, Photo3)的底片室，其鐵片形狀比較類似H型，因此重點便在中間的那一橫鐵片的位置。原本的想法是要將那一橫鐵片剪掉，但是不知道會不會影響功能(不知道功能為啥?頂底片盒??)而作罷，仔細再看其鐵片並非單純的平面，而是類似U字型，會卡到的部份就是U字型左側的那一豎，只要能除掉或是壓低它的高度就能順利的塞入底片。我的作法就是用尖嘴鉗將U字夾成一字(如圖所示, Photo4)，果然! 現在再塞底片就不會卡住了。

I will try to translate my post into English from now. Just want to practise my English writing before I forget how to do it. If there is any mistake, please let me know.
Searching the Internet, you can find that there are two ways to use 600 film on the old Polaroid sx70. The first method is to use a "card"under cartridge. When you insert a 600 film into Sx70, putting a card under the cartridge. Then, before the cartridge is completely inserted, taking out the card and pushing the cartridge into the camera. The second way is to remove two bulges on the bottom of cartridge(see Photo1). Before you put a film into the camera, using a pincer or knife to cut off the bulges. These two methods are quite easy to use 600 films on Sx70. However, for a lazy man like me, both of them make shooting becoming inconvenient when I need to change cartridges. Therefore, I find a easier way to use 600 film. Unlike SLR680/690(see Photo3), there is a piece of steel to prevent using unmatched film on Sx70(see Photo2). It causes 600 films cannot be inserted into Sx70. At the beginning, I tried to cut off it, but I thought it might be used as a function. ( I don't know what kind of function it could be. to push up the cartridge?) So, I used a pincer to scrunch the steel to flat it(see Photo4). It is hard to explain it in English for me. Please have a look the picture below. Now, 6oo film can be easily and smoothly inserted into Sx70 without any problem.

Photo1:

Photo2:

Photo3:

Photo4: