kinghong1970

Best way to remove GOOP: more GOOP?

11 posts in this topic

OCD, yes I have some…

 

installing some hatches, thought it’d be a good idea to GOOP the seam.

 

goop is great… but exposed to sun, it takes a pale tone and picks up all the mess.

 

so like many silicone jobs, wipe down… but it leaves a thin film of future uglies.

 

after hours of rubbing the goop and cleaning it, all I have is half hatch with some goop and frustration.

 

what I did notice is that if there is significant goop, the surface tension of goop seems stronger than adhesion to HDPE…

 

so is the solution to removing goop or cleaning goop, more goop?


pic1EF1B1FAF-9990-4ABB-9DD2-D900F0FB30A8.jpeg.f7e761b2afd14492872892422cbc79dc.jpeg

 

pic 2

391450B0-1388-4051-841C-89CC5473DF12.jpeg.14231629e73a43a2a6f0dcf2e73f4b05.jpeg

new application, let if the ooze cure, kept it thicker than usual.

 

pic3

2BF21703-2335-4E28-9C94-EE1642456D5E.jpeg.f6ef36d0a875f1c5d369fdd67ede0e42.jpeg

Old application, cleaned and rubbed but damn still messy…

 

pic4

02642455-AD3D-41EC-A213-909A546AB684.jpeg.201f4b0c52eec1be6ecf85c47323c8d2.jpeg

Old application, added a film of about 1/16” thick covering the smear lines…

 

so set to cure 24 hrs and we shall see.

 

cheers,

 

Al

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Have you tried alcohol or any other solvent like acetone? Alcohol releases hot melt, it might release goop. Ity doesn't have to actually melt the glue to release it. What you got there is karma for obsessing about those joints when the hatches leak like sieves anyway. 

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2 hours ago, Callmefish said:

Well if you need to scrape it off, maybe one of these acrylic algae scrapers might do the trick 

66848435-622A-4EED-8C8D-550AA7644B47.png

 

1 hour ago, gellfex said:

Have you tried alcohol or any other solvent like acetone? Alcohol releases hot melt, it might release goop. Ity doesn't have to actually melt the glue to release it. What you got there is karma for obsessing about those joints when the hatches leak like sieves anyway. 


according to google search…

Acetone or Toluene or Naphtha Can dissolve goop

 

trying to satisfy my curiosity so I’m playing around with what would yield good results before reaching for solvents.


going to score the edges with xacto then pull the thick buildup and see if it’ll be clean

 

I’ll try acetone but other two… hmmm…

 

more googling 

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8 mins ago, kinghong1970 said:

 


according to google search…

Acetone or Toluene or Naphtha Can dissolve goop

 

trying to satisfy my curiosity so I’m playing around with what would yield good results before reaching for solvents.


going to score the edges with xacto then pull the thick buildup and see if it’ll be clean

 

I’ll try acetone but other two… hmmm…

 

more googling 

Go naptha 1st, it's actually quite benign. Way back when I worked on commercial shoots the props would always go to naptha 1st because it wouldn't even damage the custom printed package and bottle labels. Acetone is very aggressive and will actually dissolve some plastics. My son broke his roof pod in a parking garage and of course it was up to me to fix it. I did some tests using polyester resin and glass, but it wouldn't stick to ABS well. Someone on 'Old Farts Machinists' suggested using acetone to adhere a layer of glass by dissolving the ABS, then using resin and more glass. Worked like a charm!

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Interesting…

 

peeled some of the thinner applications and it’s actually not bad…

 

B20E022E-8453-4D1F-9D4B-29CF953DA01F.jpeg.888fb1e54e3b8444d71bc253cd0364db.jpeg

 

it was able to pick up the previous smudges of cured goop.  Thicker application basically pulls the old one off the surface.

 

IMG_0993.MOV

 

DC7F61B8-D23F-4889-BFE8-9E874AB59DF7.jpeg.c3cdac9b4e483413b1f4f750c12b83e4.jpeg

 

scotch pad also does a decent job… but the new ones are quite abrasive and cuts into the harder plastic like the hatch.

 

EAB4C491-0897-4717-907A-703F6E999744.jpeg.6de411d14e1fd2aac2e2e349e71a6f31.jpeg

 

I would try to find a softer green pad, maybe a white pad, not a new coarse pad

 

ir cuts the goop into smaller rolled bits but also clogs the pad as well.

 

now… just for **** and giggles…

piece of dried goop in acetone.

 

261EA50C-2347-4A64-9189-6EB5066D07C2.jpeg.b1b35262d0d2244551b75dee31f8d4b5.jpeg

 

while it was not instantaneous, acetone started working on the goop and it’s no longer elastic… turning it into some crumbly mess.

 

I’d be wary of using acetone or any solvent as it may work to degrade the “essential” part where goop need to stay.

 

maybe light dab away from seams?

 

tomorrow, peeling some stubborn oozes.

 

cheers

 

Al

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Just now, kinghong1970 said:

No… I am not…

I’m in need of serious help

How’s Al’sBatross … still hanging on the wall? :stick: … told ya to rather get the Stealth :worms:

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Posted (edited) · Report post

1 hour ago, Africaster said:

How’s Al’sBatross … still hanging on the wall? :stick: … told ya to rather get the Stealth :worms:

when we flying to South Africa?

something like that deserves a trip to complicate things some more!

 

and Al-Batross is doing well... feeling bit neglected...

Edited by kinghong1970

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So interesting

thicker layers Ms are much easier to pull clean

thinner areas I had to use the dish washing scotchbrite pad

 

some of the thick buildup, the insides were not completely cured but using a clay modeling tool, or a simple popsicle stick to break the initial bond with the hull and pulled out neatly.

 

While pulling, the goop also pulled away from the foam gasket. My guess is that to don’t like to stick to foam.

Anticipating this, I made sure I lay a bead of goop inside so there’s plenty water blocking  even if not at seams

 

so in conclusion, best to not smear goop, the the tick ooze build up and cure and then pull it off for clean finish

 

be sure to have ample material inside the mating surfaces to create a dam for water.

 

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