We would like to test various wiper pads to see if we can find a more robust and effective solution.
hey @kent Sorry I haven't been able to update you!
Double soaked wiper pads do last longer in the wiper mount and appear to maintain shape better, however the fibers still detach from the pad and attach to the nozzle pretty regularly. Another issue is after multiple uses the abs in the coating begins to harden and becomes more of a solid piece rather than a fibrous cleaning surface.
On the topic, we are discussing some alternate options here T3759. Any thoughts?
Using the X2 ABS Coated Wiper Pad
Using Gcode ~150 prints worth of nozzle cleaning/wipes on the wiper pad at 170 C.
COPPER - NICKLE PLATED TEST
HARDENED STEEL TEST
I used this gcode:
I like these ones the best for what we need so I am testing them with some polydissolve wash to aid in the material sticking. Right now this wiper clears the nozzle tip great but it doesn't trap the material, just roles it to the back of the nozzle.
WIPER PAD = #7445
HARDENED STEEL NOZZLE
*my tests are not using that ^^ much pad in the wiper mount so it isnt getting all torn up like the test did, just in case that was a worry for anyone*
I can't seem to find this on scotch-brite's website, but I use this non-abrasive type of scotch brite for cleaning engine blocks/heads because it doesn't scratch but still does a good job of getting stuck-on stuff off.
The other idea I came up with to prevent the fuzzies from breaking the probe is to use a hot knife to cut the wiper pad. It works pretty well to keep the ends of the wiring looms from fraying, and it seems to work pretty well to keep the strands in the pad together. Originally, I had been using an open flame to melt and fuse the fibers together, but that process isn't really recommended especially on something that gets treated with acetone which is flammable. Once the acetone dries it isn't really flamable any more, but it would only take one mistake to make for a really bad day.
Leather Results from initial testing:
I do not recommend we use leather as the wiper pad source. While it doesn't wear the nozzle down, it does deposit debris. I suspect this is due to the nozzle heat while it is wiping accelerating the breakdown of the leather fibers.
I had to adjust the wipe depth slightly so it wouldn't push out the leather from the mount.
Before Wiper Test
After Wiper Test
I used the original Wiper Pad Testing Gcode.
I would approve these for use as far as nozzle life goes. My one concern is that I am not sure what this pad is coated in, there is some kind of plasticy coating on the fibers. I have not seen evidence to suggest that this grips and holds material any better but I gave some to MER to try out. I would also like to run some temp tests to find out if these will melt or catch fire, until then, these are only approved for a wipe temp of 170 C.
Also note the particles on the nozzle in the AFTER pictures, didnt seem to be a huge issue, just thought I would point it out.
Before Wipe Test
After Wipe Test
@anolen Interesting, thanks for testing that. It looks a lot less worn out than the other types to my eye both the pad and the nozzle. It's not great the little blue flakes on the heaterblock, but it might be that is happening with other similar materials, it's just not as visible because the material is white or grey.
SECOND TEST OF Non-Scratch Wiper Pad
This test was done with the pad placed into the wiper mount 'dome up', see picture.
NOTE: The Same Nozzle was used for both Non-Scratch Pad Tests.