Fluke (handheld)display repair -> filler/glue -> Polishing is not an option - Page 1
Forum section: electronics / repair

author: ElecSeb
author_rank: Regular Contributor
timestamp: January 04, 2019, 09:54:22 am
content: So everyone knows how a fluke display looks like, so no need to include a picture...However I have one which is scratched too deep for just a good polish exercition. Therefore I have been looking for fillers etc. But nothing really useful found yet.So are there any thoughts on fixing Fluke screens in general (by filling with a compound/filler/glue)I thought about something like this:https://www.awardplastics.co.nz/shop/Plastic+Fabrication/Adhesives++Cleaners/UV+Adhesives/Acribond+UV3232/x_cat/00757.htmlBut there are probably a lot other people who already experimented

author: coromonadalix
author_rank: Super Contributor
timestamp: January 04, 2019, 11:33:11 am
content: For witch fluke instrument ??I did use something like that, filled the grooves, dried for a week, used 1000 and 2000 grit sand paper with water, finished with novus fine scratch remover polisher, aand the results where pretty good, re polished 2 times, and youhad a hard time to see the defectsMy friend spilled acetone on a windows meter, used same sand paper techniques and novus polisher, and restored it pretty goo too.

author: ElecSeb
author_rank: Regular Contributor
timestamp: January 04, 2019, 12:51:52 pm
content: Fluke 289, Fluke 287 and Fluke 77 (but especially the 28x, because these 3 cases are further looking fine)Can you tell me what material you used (as a starting point).First I want to polish the scratch, so it is flat and avioding it will include any bubbles, then apply the stuff.Next step to sand it down and polish the complete screen (have a dremel so should not be a problem...)

author: coromonadalix
author_rank: Super Contributor
timestamp: January 04, 2019, 01:16:45 pm
content: I polish by hand the dremel polishing pads / whells are heating the plastic way too fast, melt it a little and mess all the job you have done.Tried and practiced a lot, but an hand job with circular motion will be the best. Done it yesterday on a old 34401a window bezel, it was pretty good, the surface painted lettering did come off but it is polished lollEven done it on my Gossen 28s it was a success. Had 2 good scratch.Filled the scratch with gorilla gel glue on a tooth pick, 24 hrs dry time, i protected the meter casing with large kapton tape all around the windowAlways with water and change it often : Started at 800 grit, 1000 and 2000 grit, (no mecanical tool) and Novus plastic fine scratch 2-3 times.I`ve bought recently on Ebay from a guy who machined fluke 83 series windows meter for 12$ it was a perfect fit, worth the buy, the problem was to remove the old windows, its kinda fused with the front casing, it started to crack from one corner, 1-2 mm a week lollI have acrylic glue / bonder very fluent and hard to control, this one runs everywhere loll but it fill gap pretty well with an syringe, and dry pretty transparent ??

author: ElecSeb
author_rank: Regular Contributor
timestamp: January 04, 2019, 01:53:04 pm
content: after some research it seemed in The Netherlands this glue is also sold (and affordable!)

author: coromonadalix
author_rank: Super Contributor
timestamp: January 04, 2019, 03:16:01 pm
content: Do some tests on clear plastics, scratch them, fill the scratchs etc... see how you can work things out ...