At the edges of the protective casing there are springs preventing excessive bending. Greetings to all. I increase the speed, it starts to rotate. Conclusions: The load on the flexible shaft chuck transfers well after lubrication. The shaft began to rotate more noticeably. Current measurements were not made, although they were planned. Delivery is almost free, the price of the track number is 19 cents, so I didn’t save: Comparative photo of engraver, flexible shaft and thick marker: Possible modification and maintenance: The flexible shaft by the way came without lubrication. I don’t plan to buy anything specific, there is only lithol 24: However, I’m not sure that lithol is a good solution. After lubrication at the 1st speed, the engraver started working. I offer you an overview of the device for the engraver, namely the flexible shaft. Key and wrench not included. https://jiji.com.gh/cars/volkswagen-passat-2016 The set is budgetary, collet chuck, The possibility of parsing is not provided and the main drawback is the square molding of the ends of the cable on both sides.
Trying to turn it on: At the first speed, the engraver hums and does not spin!
A few drops on the shaft – a few reciprocating movements, done. Small vibration is present only in the nose of the engraver and this is very bad. But personally, I have an association with a car speedometer drive: There are no vibrations, beats and backlashes. Lubrication needs to be considered. At least there were no traces of oil left on the hands. There will definitely be beats! Let’s go back to shopping:
The diameter of the cable is 3 mm, the ends are molded to a square of 2.5×2.5 mm.
The collet was included, diameter 3 mm: Axial play in the handle is not noticed, probably the fit in the bearings is tight. We have a Defort DDG-140 engraver in stock, there were doubts that the thread would not work, there was no experience, but I decided to order it anyway. At the moment I am assembling an aircraft model, but there the need to use an engraver is reduced to almost nothing. You can still grind with sandpaper and lick off a little edge.
Trying to put it together. On one side there is a glass with a thread for screwing onto the engraver and the absence of bearings. The engraver itself was bought thanks to one of the reviews on the muse, but in a cheaper configuration.
There is nothing to break inside, even if they play football with a package: Suggest options: Better control of the cutting tool due to a closer position to the hand.
I took it in my hands and, when tilted from the inside, the cable unexpectedly fell out: Application in modeling, in working with small details, that’s it.
A flexible shaft is a cable that is inside a protective sheath and transmits rotation from, in our case, the engraver to the cutter, at a certain distance. I could not disassemble it yet – the bearing model is 688zz.
2nd speed – I try to load – the engraver – the speed drops.
It remains to make a tripod for hanging the engraver and the tool will be functionally completed. However, their function is performed by the bearings of the engraver itself: I use the engraver not often, but those cases when it is necessary cause a little discomfort due to the dimensions.
The handle sits quite comfortably in the hand, the case is plastic. More details under the cut. In my case, the load is assumed to be axial, that is, work with burs and cutters. The connections of the cartridge in the handle with the cable are not broken, probably there is a large reserve in depth. One of the most common packaging options is a paper bag reinforced with polyethylene with bubbles: By analogy, one can imagine a dentist’s chair with a drilling unit.
The hero of our review:
So, a flexible shaft is a structure that transmits torque between axes that significantly change their orientation relative to each other. The device got damp and began to lie mercilessly.

Flexible shaft for engraver

Approached. There are two sealed bearings inside. Just do not understand why on both sides? Very reminiscent of the cable from the picture of a car part. The solution to the problem is to pull the cable out of the shaft by 1-1.5 cm and the cylindrical part already falls into the cartridge of the engraver.
Lubricate bearings and shaft.
Trying to fix the first cutter that comes across: In general, these are all half measures.
We wind the glass on the engraver, it’s ready. Since the radial load and the collet are not quite compatible in my opinion, you will occasionally have to drill holes and even less often mill in depth. Working with a flexible shaft is more convenient than with an engraver in hand, definitely. In our case, this is an engraver and often some kind of cutter or bur. Radial play is also not observed. At high speeds, the shaft shell is warm, the handle does not heat up. Or a plumbing cable for cleaning pipes. Speeds are high, but liquid lubrication will not work. Wraps up without problems: Vibrations are gone. A hole for fixing the shaft when installing a tool and a chamfer on the chuck for clamping with a key. At 3rd speed it is already acceptable. The order was made on July 19 and on August 11 I received my parcel in arms. To solve this problem, there is a so-called flexible shaft. We clamp the square cable into a round collet. The key is taken from the engraver, the chrome-plated shaft from the CD-ROM performs the function of the crank:
Access to small cavities.