Recommendation? Silicon Lubricant with no additives for knife sharperner

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zuismanm

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Apr 27, 2021
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Hi. I need recommendation for lubricant that will suite this knife sharpener:
https://vk.com/claw_grinder?w=wall-181859694_2304
(actually at pictures - knot for which I need a lubricant)
problem here is that knot consists of plastic (3D printed) sleeve inside which slides steel rod. So - here is required lubricant suitable for sliding steel over plastic.
Guy that produce it recommended me silicon lubricants without additives. So lubricants that I can buy in car supply shops do not suite (they react with plastic).
He recommended this one
https://www.lamnia.com/en/p/1935/knives/benchmade-bluelube-lubricant-983900f
Problem is - it is now out of stock(at least at shops that ships to Israel). Other options he knows are of Russian production and I did not find supplier that ships to Israel.
Can some one point me to something that can be ordered from Amazon, ebay, Aliexpress - that can suite this knot?
 
zuismanm said:
Hi. I need recommendation for lubricant that will suite this knife sharpener:
https://vk.com/claw_grinder?w=wall-181859694_2304
(actually at pictures - knot for which I need a lubricant)
problem here is that knot consists of plastic (3D printed) sleeve inside which slides steel rod. So - here is required lubricant suitable for sliding steel over plastic.
Guy that produce it recommended me silicon lubricants without additives. So lubricants that I can buy in car supply shops do not suite (they react with plastic).
He recommended this one
https://www.lamnia.com/en/p/1935/knives/benchmade-bluelube-lubricant-983900f
Problem is - it is now out of stock(at least at shops that ships to Israel). Other options he knows are of Russian production and I did not find supplier that ships to Israel.
Can some one point me to something that can be ordered from Amazon, ebay, Aliexpress - that can suite this knot?
Click to expand...

https://www.amazon.com/MicroLubrol-...65326&pd_rd_wg=oCiw1&pd_rd_i=B00ZM36C98&psc=1


Pay attention to the centistoke value, the higher the number the thicker it gets. At 10 or so is about as thin as skim milk, 50 is like motor oil. AT higher numbers it is more like grease.
Most copiers that use a contact heat roller with a release agent use this type of oil as well - dimethylsiloxane - silicone oil.
 
Look into food-grade silicone oils available in your region and you'll be good. It's commonly used for lubricating food service machinery so it's easy to find all over the globe and it won't have additives that are damaging to polymers.
 
HeavyHanded said:
https://www.amazon.com/MicroLubrol-...65326&pd_rd_wg=oCiw1&pd_rd_i=B00ZM36C98&psc=1


Pay attention to the centistoke value, the higher the number the thicker it gets. At 10 or so is about as thin as skim milk, 50 is like motor oil. AT higher numbers it is more like grease.
Most copiers that use a contact heat roller with a release agent use this type of oil as well - dimethylsiloxane - silicone oil.
Click to expand...

Hi.
Thanks a lot. Lot at amazon is out of stoke. But found same lot at e-bay with shipment to IL.
Thanks dude!

By the way - is really that only silicon lubricants suite such joints? Someone told me that I can simply use olive oil, but I am little bit suspicious about this "proposition":)...
 
I have it in a spray can, it's kind of a general purpose lubricant that doesn't attract stuff like oil, which is why you don't want to use oil. It's one of the must have lubricants in my shop. What polymer are your 3d printed parts made of?

As useful as silicon is I can't imagine you can't find it locally. Around here it's in many of the hardware type stores.
 
Diemaker said:
What polymer are your 3d printed parts made of?

As useful as silicon is I can't imagine you can't find it locally. Around here it's in many of the hardware type stores.
Click to expand...
This knot is made of PETG
At ACE I have found 3 silicon lubricants but all for car parts and all with some special additives. And that according to what guy that makes this sharpener says do not suit this knot (since will react with plastic)
 
You could probably get by with dielectric grease, is also silicone based with non petroleum thickener.
 
Lockshops might too, or know who else might. How much have you called around?

With the spines in the bushing grease might work, but would be a PITA to get out if it didn't. My pure silicone spray is pretty thin and doesn't add any drag to the rod. I know grease would add too much drag for my EP style guide rod.

This is what I have if it helps. Link
 
PTFE lubricants or powdered graphite would also be possible lubricants that should be PETG safe.
 
Thanks guys. Of cause in Israel there are no Dive shops (suppose some US shops network).
But I think - I got enough info to find something in ACE or Home Center. At least I will try them...
10x
 
5 or 10 weight Nano-Oil will work as well, and without damaging plastic or (synthetic) rubber.
I've tested both on various O-rings used in flashlights, nylon sliders for drawers, small nylon cogs found in various household appliances, as well as on different types of suspensions found on recumbent bikes (to combat stiction)
 
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