免拆热端长通针/Non-disassembly Hot End Long Needle

之前：堵头后要开机状态下加热热端，加热完又要赶紧用钳子把热端夹下来，拿着内六角慢慢通，通慢了冷了通不动，通快了烫个手那是家常便饭。老是手忙脚乱。

近日：网上看到一好物，它又长250mm（可以从打印头顶端一直通到喷嘴）又细1.5mm（小于1.75mm耗材喉管可正常进入还有余量），那么它就非常适合做一个不用拆热端疏通喷嘴的长通针。闪亮登场：全硬SKD-61模具托针双节顶针台阶带托二级顶针托针0.8-2.5mm，于是搓个手柄打造成咱打印机用的通针。

Before:when clogged, you had to heat the hot end with the machine powered on. Once heated, you quickly clamped the hot end off with pliers, then carefully cleared it with an Allen wrench. If you worked too slowly, it would cool down and become stuck; if you rushed, burning your hand was a common occurrence. It was always chaotic.

Recently: I founda handy item online. It is250 mm long (long enough to run all the way from the top of the print head to the nozzle) and 1.5 mm thin (narrower than the 1.75 mm filament throat so it can fit in smoothly with extra clearance), which makes it ideal for making along cleaning needle to unclog the nozzle without removing the hot end. Here it is: fully hardened SKD-61 mold ejector pin, two-stage ejector pin with shoulder support, 0.8–2.5 mm. I fashioned a handle to turn it into a cleaning needle for our printer.

现在：堵头后热端加热250度，移除打印头的铁氟龙进料管或者五通，长通针直插到底，喷嘴出料收工。（上图仅为了展示通针长度，实际使用种不用拆下热端）

Now:After clogging, heat the hot endto 250°C,remove thePTFE feed tube or five-way fitting of the print head,insert the long cleaning needle all the way down,extrude filament from the nozzle and finish.(The picture above is only to show the length of the cleaning needle. The hot end does not need to be removed in actual use)

打印：PLA、PETG均可，因为通针很长所以导热很慢手柄PLA依然不会热变形。

安装：手柄插入针——旋上尾盖——完成

Printing: Both PLA and PETG are usable. Since the cleaning needle is very long, heat conduction is slow, so the PLA handle will not undergo thermal deformation.

Installation: Insert the needle into the handle — screw on the rear cap — done

⚠⚠⚠注意⚠⚠⚠：

1、该手柄只适合上图尺寸的模具托针，注意规格尺寸。

2、不是所有的堵头都靠此方法可以解决。

3、新手建议您还是按官方wiki指导疏通。

4、该工具和方式仅提升本人疏通喷嘴体验，并不代表适合所有机器和所有玩家😊，请自行斟酌。

⚠⚠⚠ NOTICE ⚠⚠⚠:

1. This handle is only compatible with mold ejector pins of the dimensions shown above. Please pay attention to the specifications and sizes.

2. Not all nozzle clogs can be fixed using this method.

3. New users are recommended to clear clogs following the official wiki guide.

4. This tool and method only improves my personal experience of unclogging nozzles. It may not be suitable for all printers and all users 😊. Please use it at your own discretion.