AFV Painting & Weathering
Answers to questions about the right paint scheme or tips for the right effect.
Answers to questions about the right paint scheme or tips for the right effect.
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Tape ruining DS tracks
BillGorm
Joined: November 02, 2009
KitMaker: 609 posts
Armorama: 433 posts
Posted: Monday, February 21, 2011 - 10:42 AM UTC
I attached the DS tracks that came with my Sherman kit (6231) to masking tape before priming them with Tamiya primer. When I peeled them off 8-9 hours later, the side that was attached to the tape (i.e. not primed) was sticky and appeared to have melted slightly. Has anyone encountered this before?
GeraldOwens
Joined: March 30, 2006
KitMaker: 3,736 posts
Armorama: 3,697 posts
Posted: Monday, February 21, 2011 - 10:54 AM UTC
Quoted Text
I attached the DS tracks that came with my Sherman kit (6231) to masking tape before priming them with Tamiya primer. When I peeled them off 8-9 hours later, the side that was attached to the tape (i.e. not primed) was sticky and appeared to have melted slightly. Has anyone encountered this before?
Never heard of gummed adhesive affecting plastic. At a guess, if the primer was a lacquer, the porous tape may have soaked up the thinner from the spray, and retained it long enough for it to melt the plastic. Not sure why the DS tracks would need to be primed anyway. I just paint them.
CMOT
Editor-in-Chief
Joined: May 14, 2006
KitMaker: 10,954 posts
Armorama: 8,571 posts
Posted: Monday, February 21, 2011 - 11:00 AM UTC
Bill I cannot help you with the issue you have suffered, but can I ask why you put tape on them in the firsat place? I ask as I can't see what purpose the tape was serving.
BillGorm
Joined: November 02, 2009
KitMaker: 609 posts
Armorama: 433 posts
Posted: Monday, February 21, 2011 - 12:44 PM UTC
Gerald - I haven't used DS tracks before. In fact, I haven't used anything but Friuls or individual link tracks in a long time. Sometimes you just don't want to stop and post a question on every little thing ... I assumed primer wouldn't hurt.
Darren - The tape was just used to hold the tracks flat to a piece of styrofoam along with the other small bits so that I could spray easily without handling the parts directly.
Darren - The tape was just used to hold the tracks flat to a piece of styrofoam along with the other small bits so that I could spray easily without handling the parts directly.
tankglasgow
Joined: October 04, 2010
KitMaker: 275 posts
Armorama: 260 posts
Posted: Monday, February 21, 2011 - 12:59 PM UTC
Bill, saw your post, I'm about to paint DS tracks for my sherman so it caught my eye. I bought ordinary (ie not Tamiya or specialist modeling tape) masking tape for a bit of decorating a while ago and was surprised to note on the packaging to use and remove within four hours. Also when painting a model wooden fishing boat years ago I left masking tape on for months and when I lifted the tape it completely removed the paint below. So it would seem that the longer this stuff is left the stronger the bond?
CMOT
Editor-in-ChiefJoined: May 14, 2006
KitMaker: 10,954 posts
Armorama: 8,571 posts
Posted: Monday, February 21, 2011 - 01:06 PM UTC
Thank you for the answer Bill. I hope someone can help you with your issue.
BillGorm
Joined: November 02, 2009
KitMaker: 609 posts
Armorama: 433 posts
Posted: Monday, February 21, 2011 - 01:29 PM UTC
Paul - Interesting ... I never thought plain old masking tape would do damage to plastic. I guess it does if left in contact too long.
Darren - I know someone who can help ... Panda Plastics! The vehicle I'm modeling should have T-54E1 tracks anyway, so now I've got a reason to ditch the WE 210's that came with the kit.
Darren - I know someone who can help ... Panda Plastics! The vehicle I'm modeling should have T-54E1 tracks anyway, so now I've got a reason to ditch the WE 210's that came with the kit.
c5flies
Joined: October 21, 2007
KitMaker: 3,684 posts
Armorama: 2,938 posts
Posted: Monday, February 21, 2011 - 02:07 PM UTC
Thanks for the heads-up Bill, and although I'm sorry you lost your tracks you probably saved many others from the same thing happening to them.
I've also used masking tape to hold the DS tracks flat while priming, but used Vallejo acrylic primer with no ill effects, so as Gerald pointed out it was probably the Tamiya primer reacting with the DS and/or tape that caused your problem and not the tape itself.
I've also used masking tape to hold the DS tracks flat while priming, but used Vallejo acrylic primer with no ill effects, so as Gerald pointed out it was probably the Tamiya primer reacting with the DS and/or tape that caused your problem and not the tape itself.
imatanker
Joined: February 11, 2011
KitMaker: 1,654 posts
Armorama: 1,565 posts
Posted: Tuesday, February 22, 2011 - 11:13 PM UTC
Quoted Text
I have been in auto refinishing for thirty years.Boys,I know,I know masking tape! Bill, saw your post, I'm about to paint DS tracks for my sherman so it caught my eye. I bought ordinary (ie not Tamiya or specialist modeling tape) masking tape for a bit of decorating a while ago and was surprised to note on the packaging to use and remove within four hours. Also when painting a model wooden fishing boat years ago I left masking tape on for months and when I lifted the tape it completely removed the paint below. So it would seem that the longer this stuff is left the stronger the bond?
Yes, the longer you leave it on,the more it sticks.If you soak it with any type of solvent it will soften the glue.If you have to flip your parts over when you paint them ,make sure the paint is very dry,if not the solvent in the paint will act with the glue and BINGO! instant paint remover.Automotive tape has a fairly strong glue,as does regular use tape.I have found that the 3M house painters tape is just strong enough to hold parts in place without any glue transfer.Remember to spray your parts "dry" i/e light coats and you should have no problems 
pseudorealityx
Joined: January 31, 2010
KitMaker: 2,191 posts
Armorama: 1,814 posts
Posted: Wednesday, February 23, 2011 - 12:28 AM UTC
Did the tracks, once pulled off the tape, eventually 'set' back, or did they stay sticky?
BillGorm
Joined: November 02, 2009
KitMaker: 609 posts
Armorama: 433 posts
Posted: Wednesday, February 23, 2011 - 01:10 AM UTC
imatanker - I'm definitely guilty of having gone too heavily with the primer (Tamiya light grey), so maybe that contributed to my problem. Based on Gerald's comment above, in the future when using DS tracks I won't bother to prime them at all.
Jesse - Good question. I had expected the "stick" to recede and the tracks to re-solidify, but they've remained sticky.
Jesse - Good question. I had expected the "stick" to recede and the tracks to re-solidify, but they've remained sticky.
metooshelah
#011
Joined: February 06, 2009
KitMaker: 1,507 posts
Armorama: 1,304 posts
Posted: Wednesday, February 23, 2011 - 01:23 AM UTC
while I do mask tracks like the sherman's (painting the middle in black / rubber paint and the connectors in steel) I have never had such a problem. I think that Gerald Owens is right, and the tape just soaked the primer / thinner and caused your problem.
Tojo72
Joined: June 06, 2006
KitMaker: 4,691 posts
Armorama: 3,509 posts
Posted: Wednesday, February 23, 2011 - 02:11 AM UTC
When I spray my DS tracks,I lay them out on a flat styrofoam pad,like from a florist.I secure them with nails or pins thru any openings,when the paint dries,I just flip them over and spray the other side.
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