Logitech Training Questions

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Last updated: Apr 08, 2022 by Former user (Deleted)
2 min read

Questions for future training

What is the best way to clean the WG-2 polishing head?

How do you set the WG-2 polishing head?

October 2019 Logitech training (Luan)

Some slides get small cracks and chips on the edges after frosting on the LP50, how can this be avoided?

Their advice is to start the plate slow and wet, at 5 rpm, and then ramp up slowly.

 

Display screen on the LP50 is very dim, can that be fixed?

New front panel ordered on X390C.

 

What types of different grits/abrasives and fluids can be used in the abrasive drums on the LP50 and the PM5?  Any suggestions for softer or different types of material?

For hard material:

  • Lap with 10% (by volume) 600 grit SiC and 90% DI H2O (max fill line is 4.5 L, so use 450 mL SiC)

  • On PM5, do a CW WG2 head rotation, up to 70 rpm and 100% speed. Add 4 weights per slide (can only run 3 slides).

  • Should polish in "a few hours".

For soft material:

  • Lap with 15% (by volume) AlO and 85% DI H2O

  • Consider hand lapping

  • On PM5, do a low sweep with CCW WG2 head rotation (FYI to change direction, you need to turn the WG2 off first) 10-20 rpm, 30-40% speed. Add 2 weights per slide.

 

Do we need new slide holders for the PM5 or can they be repaired?  Some are leaving scratch marks on the backs of slides.

Cleaned on X390C. Maybe we should play around with the sides, to make sure they don't have room to shift?

 

Any different types of the epoxy to try?  Ones with longer curing time? Thinner and easier to absorb into soft material? Any other tips on impregnation?

Logitech epoxy ($500 for 1 lb), Struers Epofix (nice), canadian balsam and crystal bond are both removable. None of these have a longer curing time or seem thinner.

 

One jig is uneven, review procedure on how to flatten the chuck face.

Bring the chuck face even with the plate and then lap using SiC for a period of hours.