hello welcome to my tech Farm let's find out which is the most well resistant filament type during the friction with the metal and to be honest with you if I wouldn't be curious about it myself I wouldn't do it because uh this is so big work and since the YouTube don't really appreciate my videos I'll try to benefit a little bit more from this work so I'll try to write some scientific article for you this means actually that I will have more test objects so instead of one per each type which was my original idea I will have three or sometimes even four in some cases but this also means I cannot really show you all the data from this experiment I still need a little bit more information in that article but don't worry the final results will be included in this video just few examples why I need this information for for example which material should I use if I want to print a scraper which is more we resistant when I remove the purge line or something like that or this coin replacement which is always in the friction with the metal which is the most fa resistant or let another example a gear very often we have a c printed gears in combination engage with the metal ones for example on my late machine I have similar case where I transmit the torque from the main motor when I create some threads and actually if the torque is not too big the RPM is not big so this means there will be no heat the ver will be the first failure of that c printed gear this is my imagination I have this 6 mm hard and steel shaft and I want to move it on the surface of C pitted objects maybe a few thousand times and at the end I want to measure how deep is that Groove but of course for this I need the same circumstances because I want to repeat the same procedure with each test object and for this I have to build some apparatus and also I will check the edge of this Harden Ste shaft under the Microsoft just in case if I will notice any varying I can still turn to the other side or if necessary I can just grind the end and again I will have sharp edges and now let's see which materials are included in this test I have four pla types the pement pla polymaker poly light pla Pro bambo pla basic Ean pla plus from PG plus cement PG polymaker poly light PG bambo lab PG basic polymaker poly light ABS bambo lab ABS e ABS plus BL cement ASA polymaker poly light ASA Ean Asa from polycarbonat Pro PC blend polymaker poly Light PC Ean PC from the naon I have only two both from YX poer this is the regular nailon and then ps6 cf15 reinforced with carbon fibers and uh from this reason actually this will be the last one in the experiment because uh it may leave some varing mark on the Harden s shaft I'm not sure at this moment but just in case this will be the last one in this experiment and just for curiosity actually I have here TPU material and this is the extruder Flex hard the hardest dpu I have at home later I decided to add three more filaments this is A1 ptg PR PC blend the carbon fiber version and also pment p g carbon fiber version this is my test setup here goes the test object which will move back and forth this is something like a y axis on the b sler c the printer here I have the tensioner the stepper motor this is the shaft and actually I have aare one to it goes into two linear barall bearings here they will keep this in the vertical position but allowing the movement up and down and actually this will be pressed down with a 2.5 kg load everything is controlled by the Ard in Uno this is the display with the counter and after every 1,000 movement it will stop and then I will clean it and when I press this push button it will continue with the operation here I have very soft TPU legs so this will not go anywhere during the movement and the movement frequency is actually 2 per second the length is 20 mm because I don't want to melt the filament I just curious about the friction maybe interesting to mention that this is Clos Loop step motor which will not skip steps it is important because if the shaft is in a Groove and there is some additional friction or something like that it would be a big problem and also it is very easy to use because I don't need a separate separate motor driver and I don't have to mess with the re and it is also very quiet everything is programmed I just have to give it the power position in the center and when I press the P button it will start with the movement of course I have to place the load on it this is the counter and it will stop after every 1,000 movements and then I have to press the P button it will continue with the work this test object is just for demonstration let me show you how it looks like now as you can see we have very nice Groove here and I will measure the depth of This Groove with the D indicator this was just a demonstration but it's time to start the ra testing I'm giving it the power and let's start with the testing the frequency is 2 per seconds and the length is 20 mm this means it doesn't move too fast because cuz I don't want to mat the filament just I'm curious about the friction the next T object polymaker pla after every 1,000 movement it will stop for the cleaning and now it can continue it's almost finished and after 3,000 repeats that 6,000 passes it is ready for the measuring I will measure it later at the end where all test objects are prepared I will not present every testing just few this is bambo pla basic this is isan pla plus and the test is almost finished and I can see less varing compared to previous three so it looks like that we will have a difference between Brands two not only between the materials or maybe this is because of the white color and now moving to ptg wow noce less dust so this ptg at least is more very resistant compared to the previous P materials and similar results I got with other PG materials I just started with abs and there significantly more dust I can see so it is less resistant compared to the pg it just finished few seconds ago and it looks like it was just a dust but uh the groove is not too deep so it is very similar to ptg looks like the ASA will be very similar to ABS but two more ASA to go interesting in most cases the weight rotates this means the shaft rotates too and this will lot more equal wearing ASA is finished to all three looks very similar I will measure them later and now I can move to the polycarbonate it's almost finished at the first look very similar to ABS or ASA but this is PC blend we will see with the other two but I'll measure them at the end poly migas polycarbonate and the test is on 50% I forget to mention that I noticed after every 1,000 movements I have to clean the shaft too because sometimes some material sticks to the end this is hard to see but this is polycarbonate transparent now it's clean I can continue polycarbonate is finished to and for the first feeling or looks it is very similar to ABS but I measure it later and now let's move to the TPU this is hard TPU as you can see very minimally flexible and I know there will be big friction between metal and this surface I hope it will be able to move it and at this moment I have no imagination off with the result so let's see it I hope it will be able to move it okay the test is at 50% and I cannot see any kind of the varing so far I will analyze it later but it looks like this hard TPU is the best so far it was finished few seconds ago not even the dust almost nothing visible I was surprised but actually this is something what I should expect on my previous workplace I was working in injection molding company and there the best quality shoe buttons for made from thermoplastic polyuretan TPU and now let's see what can we do from the Nyon I'm starting with the regular one and actually if we buy a plastic gear usually it is made from the naon almost 2,000 repeats and I can see some dust not much but it looks like that we have a winner which is the TPU stopped for the cleaning but it looks like it was just a dust I afraid that it will not be measurable we will see that soon and now inspection of the shaft under the microscope and then I can move to the carbon fiber version the used one is on the left side and it is still in original shape the test is at 80% and from the noise I can hear more friction I'm curious if it will polish the bottom of this shaft but something similar like with the nailon I can see some dust but the groove is not too deep H the groove is bigger compared to the regular Nyon so those carbon fibers didn't help actually just um resulted more friction and bigger varing now let's check the shaft I can still see those cutting lights I don't need microscope for this I cannot see any signs of the wearing of the shaft before measuring one more thing because the ptg performs so good in this test I want to include one more this is ptg by everyone and I want to improve a little bit that statistic and one more filament to add to confirm or just to test the effect of the carbon fibers this is prman PC brand the carbon fiber version the test is at 25% and even now I can tell that this groove will be deeper compared to the regular pc blend without carbon fibers interesting with polycarbonate always have some stick material on the surface of the shaft now it's clean it was finished few seconds ago and I already checked the top surface of the shaft uh there is no wearing sign so it is not polished or something similar but one thing I notic that it is warmer than after the regular materials so this carbon fibers really creat more friction and there is more wearing compared to the regular material everything is prepared for for the measuring for the look the deepest Groove is inside the P material but I believe that the ABS and polycarbonat has a similar dep but it's time to measure them let me explain you my measuring method first so this will my reference surface and then I will measure three points along the center line but outside of those circles because I want to measure on the surfaces where that shaft has a moving passes in both directions this is a digital dial indicator and this will be my reference surface 8 mm it is quite correct but actually I will Zero it here and now I measure those three points I mentioned earlier - 0.43 - 0.49 and - 0.53 it's not completely horizontal the Sha was probably under small angle but that's why I'm measuring in these three points and I we calculate the average value just quickly I will show you one PG sample too I measure them in the C points but just quickly for the sample so it is still zeroed correctly and this is 0.07 mm only and quickly on ABS part bigger than ptg and on TPU or maybe 0.01 mm from the reason I explained at the beginning of this video I cannot really show you all the data from this experiment maybe this one picture small gift for those who is watching the video without jumping and now let's see the first part of the results on this graph we can see the average values for these filament types and uh we can see the biggest varing on the pla material but we can also see big differen between maximum and minimum actually this one point is thanks to the Ean pla plus otherwise this would be even higher with ptg the spread was much smaller and even from the noise I would say that the varing of the ptg was smaller compared to the ABS and ASC even if the difference between numbers is not too big but I would say that these two filaments are quite similar until with the polycarbonate the wearing is much bigger again this one point is thanks to that plus C PC blend it looks like it depends a lot of the type of the polycarbonate with the nailon and TPU actually I had only one test objects if I don't include the carbon fiber version I was curious about the effect of the carbon fibers here you can see next to each other the regular and the carbon fiber version of the pla PG polycarbonate and Nyon and it's not constant until with the pl and PG the carbon fiber version has less varying until that on the polycarbon and naon I can see more varying on the carbon fiber version and here you can see the values on this graph and there is no clear correlation between the carbon fibers and their effect of the weing the measure difference is quite obvious but I'm not too happy with the results because if the accuracy of the dial indicator is 0.01 mm and I measure 0.05 this means in start I have a 20% error but of course the difference is quite obvious between 0.05 and 0.2 mm but anyway I decided to repeat a few tests with these test objects this is the polymaker line pla PJ ABS polycarbonate and this is the regular Nyon and flexible material and I have a new shaft this I made from the B the end is now 3 mm instead of six this means that the pressure on the surface or the stress will be four times bigger because the pressure is uh Force divided by by area so the diameter is instead of 6 3 mm but the pressure is four times bigger it is something like I would have here 10 kg weight on the same 6 mm shaft let's insert the new shaft which is unfortunately 0.1 mm smaller so it bubbles a little bit inside the linear bulb bearings and even from this noise I know that this stress will be too big for these materials at least for pla this is only after 100 repeats and I have to stop it earlier look how deep is the groove and now this is the Nyon and with this I could make 1,000 repeats and I can see that this groove will be measurable this is TPU and also I can see some dust so I know that again I have some measurable values but definitely much smaller compared to the nylon this is ABS and probably have to stop it earlier because uh too many materials in the end of the grooves it will be hard for the motor to move it completely I will stop it now after 500 repeats polycarbonate probably this will be also stopped earlier much earlier I have to stop it at approximately 400 repeats it cannot push out the material from the groove looks like here only the center of This Groove will be measured able and now the order is quite obvious even visually so the TP is the best then the naon only with these two I could make 1,000 repeats and then ptg but here I have only 500 repeats and with polyc caronut I could make only 400 repeats because the material sticks to to the edges of This Groove the ABS Groove is deeper but here I had the 500 repats but here only 400 so I measure and recalculate it and the worst of course is the P well I have a problem with the measuring I cannot measure because the the groove is not big enough at least four or 5 mm Groove would be enough but I have to print some kind of adapter which is sharper and go inside this groove I made this insert from 2.5 mm bolt and now I can measure inside the groove too and I will always measure in three points but very close to the center of the groove because there the groove is deepest 2.92 2.91 2.87 just for quick reference in one point for the video this is TPU 0.05 mm nylon 0.44 ptg 0.78 but don't forget this is only with 500 repeats quickly to analyze the data with 3 mm shaft I already mentioned that with some test objects I couldn't make 1,000 repeats well I predicted that the varing would be linear so I calculated this data probably it's not linear but in this case the data is more comparable with each other anyway the order is quite clear the best is the TPU then the Nyon third one is the ptg ABS and polycarbonate I would say the similar interesting with polycarbonate I could always see some stick material or to the shaft or in this case to the end of those grooves and of course the verse is the pla size I'm preparing to claim that TP is the best filament I need two more testings this is extruder Flex medium and I repeated that 6 mm shaft um testing and actually just scratched the shiny part of the surface I cannot feel any depth on This Groove and also very popular 995a this is bambo filament as you can see it is quite flexible and very similar even less varing here I can see just some dust but basically there is no depth in this groove I cannot feel it with my fingers overall these are very resistant materials too but the harder TPU should be always better quick conclusions for the end it's quite obvious that the TPU is the most we resistant between these tested filament types but I know from earlier experiments that that they produce more friction especially the softer ones so the harder TP is better for this kind of purposes but this also means that maybe this is not the best material if you want to print some kind of sliding linear bearings or something like that actually this is something I want to test in near future iOS told me that they will send me some tribo filament for the testing they claim it they are very very resistant and with a lower friction coefficient about my testing method this 6 mm shaft with 2.5 K load is maybe too weak but 3 mm shaft is too aggressive with the same load especially that I made it from the bolt and it's a little bit smaller and Bubbles it scratched better the surface but at least I got very nice deep grooves there so I can compare the results better maybe the optimum is somewhere between I will see and also important if somebody want to repeat this kind of experiment it is important to reduce the length of the movement because uh you saw if the groove is too deep it can push out the material sometimes if it sticks inside especially with polycarbonate in this case if you want to get good results it is always recommended to reduce the length and then actually we can measure only the center of the groove I hope you like this video and you find this information useful I definitely learned something from it and if you can please help me with the sharing of this video on social networks because I will be very sad if it stucks on three or 4,000 views again in YouTube algorithms anyway if don't that's okay at least like or subscribe because um in most cases unfortunately the recommendation is not sent even to my subscribers about new video thank you for watching and happy printing