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Author Topic: Tamiya masking tape issues  (Read 7541 times)

pipster

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Tamiya masking tape issues
« on: November 03, 2014, 08:40:59 AM »

Hi,


I have an intermittent problem with tamiya masking tape reacting with the paint underneath.  It looks like it's leaving adhesive behind but is a reaction.  This time, the paint underneath was Halfords panel spray (sprayed from the can) and had been left for a week before masking.  Masking tape was removed after 24 hours of the second colour.


Has anyone else had a similar problem?  Is it because I'm not leaving the base colour long enough to cure, or leaving the tape on for too long, or something else again?


Thanks
Phil
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inertia

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Re: Tamiya masking tape issues
« Reply #1 on: November 03, 2014, 08:45:42 AM »

I've recently had exactly the same problem, and I concluded that it was a combination of leaving it on for a week and maybe a slight reaction to the paint underneath, although I generally leave that for a few days to harden off and I'm pretty sure I did the same this time.
DM
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boatmadman

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Re: Tamiya masking tape issues
« Reply #2 on: November 03, 2014, 09:16:50 AM »

I usually leave paint to harden for a week. Mask up paint and remove the tamiya masking tape after about 30 mins.
Never had a problem.
I paint a bit of scrap at the same time and when the paint is tacky is when I remove the masking.
Be careful how you do it though. Remove the masking by pulling carefully in the direction of the tacky paint to prevent paint strings.
This works for me and is a result of failures and messes!
Ian
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pipster

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Re: Tamiya masking tape issues
« Reply #3 on: November 03, 2014, 11:01:31 PM »

Thanks chaps
Phil
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Stavros

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Re: Tamiya masking tape issues
« Reply #4 on: November 03, 2014, 11:13:32 PM »

STOP using the Tamiya tape and get on Ebay or look for your nearest CAR BODY SHOP suppliers and get some FINE LINE TAPE..................far superior than the Jap stuff!!!!!!!!!!!!!!!!!!   
 
Trust me I use it on a daily basis at work.....TOP TIP ....remove all masking within 5 mins of final coat and run your finger gently and quickly.....making sure your finger is CLEAN ...this will make the join line far flatter and looks a darned sight better.
 
Oh dont go using the stuff that Halfords sell as fine line tape is it Poo Poo
 
Ask Tug Kenny about this tip
 
 
Dave
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essex2visuvesi

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Re: Tamiya masking tape issues
« Reply #5 on: November 03, 2014, 11:14:57 PM »

Also stay away WELL AWAY from pound shop masking tape
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Tug-Kenny

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Re: Tamiya masking tape issues
« Reply #6 on: November 04, 2014, 11:30:36 AM »

 

                          :}       :-))

We're getting there slowly  Stav.


ken
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pipster

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Re: Tamiya masking tape issues
« Reply #7 on: November 04, 2014, 01:28:34 PM »

Once again, thanks chaps
Phil
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nemesis

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Re: Tamiya masking tape issues
« Reply #8 on: November 04, 2014, 10:32:14 PM »

Hi, I have used tamiya tape for years, I would swear by it, bit nonplussed by the negative comments. Could be the way I use it. I will take Stavros's advice and try what he suggests, Nemesis
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essex2visuvesi

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Re: Tamiya masking tape issues
« Reply #9 on: November 04, 2014, 11:36:20 PM »

I have had issues in the past with Tamiya tape...... seems to have a finite shelf life once opened.  Also I do remember the adhesive reacting with a paint some time ago..... I put it down to rushing and not allowing the base coat to not fully harden
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rob

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Re: Tamiya masking tape issues
« Reply #10 on: November 04, 2014, 11:59:00 PM »

Really surprised at the comments on here, I've just used some Tamiya tape that has been out in a cupboard in the shed for at least 10 years. . . . . . And it worked perfectly.
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essex2visuvesi

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Re: Tamiya masking tape issues
« Reply #11 on: November 05, 2014, 06:40:09 AM »

Really surprised at the comments on here, I've just used some Tamiya tape that has been out in a cupboard in the shed for at least 10 years. . . . . . And it worked perfectly.


I find after the tape is a few months old that the chances of "bleeding" are increased. It's not just Tamiya tape, most of the tapes I have tried do the same thing
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Terry

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Re: Tamiya masking tape issues
« Reply #12 on: November 05, 2014, 08:00:03 AM »

Hi Stavros, could you please explain what you do with your (clean) finger when removing the tape.


Cheers, Terry
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Tug-Kenny

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Re: Tamiya masking tape issues
« Reply #13 on: November 05, 2014, 10:07:40 AM »


I'll be watching the answers to this one.     {-) {-) {-) {-) {-)



ken
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Stavros

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Re: Tamiya masking tape issues
« Reply #14 on: November 05, 2014, 10:36:25 AM »

Hi Stavros, could you please explain what you do with your (clean) finger when removing the tape.

 
Was expecting this one  O0 {-)
 
Simples really....when you have removed the tape RUN your FINGER along the join in the paint quickly but with LIGHT pressure.....too slow and you will make a mess........QUICKER the better this will flat the ridge of the line down and take the harshness of it off.......DONT believe me TRY it on a scrap piece of plastic........one without flattening and the other with and tell me what the difference is !!!!!!!!!!!!
 
Ken Knows all about it ASK HIM
 
 
 
 
Dave

Cheers, Terry
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Brian60

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Re: Tamiya masking tape issues
« Reply #15 on: November 05, 2014, 11:16:50 AM »

I think the problem here is that the tape has been left on for far too long, as Stavros says remove the tape shortly after painting, ideally as soon as the new layer is touch dry, certainly for most paints an hour is long enough and in warm conditions with car sprays 15-30 minutes will be sufficient.

Terry

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Re: Tamiya masking tape issues
« Reply #16 on: November 05, 2014, 11:21:17 AM »

Hey Stavros, the difference is, I have now got paint on my finger!!!!


Cheers, Terry
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cos918

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Re: Tamiya masking tape issues
« Reply #17 on: February 27, 2017, 09:58:19 PM »

I have had a reaction in the paint from the masking tape .I was using fine line ,tamyia and blue masking tape . I sprayed the green deck and left a few days . masked up and removed the masking tape about after 30 hr due to a problem with spraying the white . The green deck is marked all over from the tape. I have tried T cut and that removed the most of it in a test patch but not the deeper marks .
whats best . hit with say 1800 grit wet and dry then Tcut ?


John
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Stavros

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Re: Tamiya masking tape issues
« Reply #18 on: February 27, 2017, 10:16:15 PM »

John you MIGHT be VERY VERY lucky and use 2500 grit Wet dry with pleny of soapy water BUT you do run the risk of making a right pigs  of it...What I would try is to buy some Farecla G3....halfords....


http://www.halfords.com/motoring/paints-body-repair/scratch-repair-paint-restorers/farecla-g3-permanent-scratch-remover-paste-150ml


Use a cotton bud to do this as you can localise the area....obviously if it dont work then Wet Dry and worse case senario repaint.




Oh and THROW that tape in the bin and use proper fine line tape as I advocate ....everyone who has changed wont go back thats for sure...it is far superior to this frog tape etc...it is used in Body shops....wonder why !!!!!!!!


And also I think you MIGHT have bought the blue tape from B&Q....another candidate for the BIN m8 ALLWAYS buy the best marking tape going...3M/Tetrosil/Rhino spring to mind




Dave




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cos918

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Re: Tamiya masking tape issues
« Reply #19 on: February 27, 2017, 10:25:41 PM »

Hi Dave
I will give that a go and if that fails 2500 grit with soap and water .
I used Fine line tape for the edge and then blue tape brought from Tool Station just to cover but not to make any edge masking . They both left marks . Blue tape more than then fine line . I have used the same set of tape on the rest of the model with no problems .
I wonder if the green paint was still a bit soft after 3 days in a warm house .
thanks for the advice


John
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Stavros

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Re: Tamiya masking tape issues
« Reply #20 on: February 27, 2017, 10:29:50 PM »

Er what eactly was the paint


Dave
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cos918

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Re: Tamiya masking tape issues
« Reply #21 on: February 27, 2017, 10:33:14 PM »

the white and primer was Halfords and the Green was Hycote
john
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Stavros

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Re: Tamiya masking tape issues
« Reply #22 on: February 27, 2017, 10:43:01 PM »

AH HA there lies the problem I think you have answered your own question here...clue is NOT the Halfords paint but the other....right sorry to say this but having seen the problem you only have one option...rub it down and recoat with Halfords...rub it down with PLENTY of soap with 800 to 1000 wet/dry .....BUT BEFORE you do this for heavens sake try on a peice of scrap first just in case of a reaction




Dave
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cos918

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Re: Tamiya masking tape issues
« Reply #23 on: February 28, 2017, 09:25:53 PM »

Hi Dave
tried some fine wet and dry in a test patch and it work very well . paint went dull but some renovate brought the shine back up.
If i was to lacquer the decks afterwards does it matter if the green is dull ?
You mention reaction, do you mean a paint reaction ?


John
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Stavros

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Re: Tamiya masking tape issues
« Reply #24 on: February 28, 2017, 10:13:23 PM »

Yes I meant Paint reaction due to incompatible materials....doesn't matter a hoot if the paint is dull after rubbing down the lacquer will bring back the shine....BUT as I said paint a piece of scrap first with the green before you put the Halfords lacquer on top of it ......just in case
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