Soldering Iron Anti-Slip Grip

This is about the Sequere S60P soldering iron — a tool I’ve been using for quite a while. It’s well known among people who do soldering: compact, convenient, and designed for C210 cartridges, which have effectively become a standard for many hobbyists and professionals.

Overall, the soldering iron itself is very well designed. Inside, it’s essentially a full-featured soldering station packed into a compact form factor. There’s a lot that could be said about it, and in general, it’s one of those cases where almost everything is done right.

But there is one nuance. The body has a silky-smooth texture. And with even slight pressure at the soldering point, the iron can rotate or slip in your hand. As a result, a soldering cartridge heated to 300+ degrees can easily end up between your fingers. Even with quick reflexes, that’s extremely unpleasant — and if your reaction is just a bit slower, a burn is almost guaranteed.

That’s exactly why this attachment was created — an anti-slip grip.

It’s thin enough not to bulk up the tool and remains comfortable to use. I designed it so that the grip doesn’t interfere with soldering, doesn’t put pressure on your fingers, and doesn’t cause any discomfort — it simply makes the soldering iron controllable and safe.

Printing specifics

The grip is printed from TPU 85A, a very soft thermoplastic polyurethane. According to the manufacturer, this material is supposedly incompatible with both the printer I used and the nozzle configuration. The manufacturer explicitly states that “this is not possible.”

My experience shows that it is possible.

You just need to understand the nature of the material.

TPU 85A does not like:

• high speeds,
• strong cooling,
• or even the slightest resistance during filament feeding.

That’s why the print was done with zero feeding resistance — the filament was unwound from the spool in a hanging configuration. For this, I made a roller with a bearing and a 1/4-20 UNC thread — the standard tripod thread from the photography world. Above the printer, I have a rail with a Magic Arm, and the roller was suspended from it. During printing, the filament fed directly from the spool without any tension.

The feed rate could be slowed down even more — I’ll definitely try that next time. If you use my 3MF file , I recommend reducing the print speed by another factor of two — the quality will noticeably improve.

What’s next

After this grip, I made similar anti-slip grips for multimeter probes. I’ll try to publish that video along with the models today as well.

And most likely, this won’t be the end — the idea has already moved further.

So stay tuned.

More interesting things are coming.

See the video for details:

If you liked this thing - let me know by putting like!  

Parts links below:

• ERYONE TPU 85A
• SEQURE S60P Soldering Iron Set
• C210 Soldering Iron Tips

Links to used tools:

• Tap And Die Set 1/4"-20 UNC
• Screw Tap 1/4-20 UNC
• Tap Drill Bit M1 M1.2 M1.4 M1.6 M1.7
• Thread Screw Tap M2/M2.5/M3/M3.5/M4/M5/M6
• Machine Screw Tap Set