Bump on the blade rubber after first time gluing.

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Hi Friends,

I glued my new rubber to my blade. I am doing it for the first time.

Backhand (Red rubber) looks okay but there is a slight bump on the black rubber. Any reasons that happened ? Will it impact the game or feeling?

Please suggest.

Thanks,
Coolchap
 

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says Pimples Schmimples
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The first picture of the R7 looks ok but the other two, it almost looks like the rubber is swollen/detached from the sponge. It's difficult to tell exactly because the photos are blurred, your camera is focused on the blinds in the background rather than the racket.

Is the rubber to sponge adhesion still ok?
If the bump is there only because the sponge to blade adhesion is incorrect then it's fixable by removing the rubber, carefully removing all the glue and then regluing it.

Ensure you spread the glue carefully and evenly, 2 layers on the sponge (allowing the first to dry completely before adding second layer) and 1 on the blade is most common.

Can you describe what you did exactly and what glue you used. It really shouldn't look like that.
Also, Did you lacquer the blade before gluing?
 
says Hitting Mach Speeds
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Yeah a dent this big isn't doing you any favors. Either the glue is very uneven or an air pocket formed there.
You can press on there or try to lift that edge and see for yourself. Also try bouncing a ball there and you will notice immedeatly if something is wrong. Some very shallow inward bumps can happen and are fine tho.
I suggest you to reglue that side.
Try to get an even and thick enough layer on both the blade and rubber. Make sure it is comepletly dry (Some glues can take really long). Then roll it on to the blade so everything is in contact and then press it on fully.I've been there aswell so just give it a few more tries
 
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Yes, I used this Blade Lacquer Revolution Nr.3 30ml. Laquer and Revolution Nr.3, Glue 50ml Normal Viscosity. I did apply 2 layers on the rubber and 1 layers on the blade. Not sure if it was not thick enough and even let it dry and do the finger testing on not getting it sticky. and used a roller to fix it. I did not sand it though after doing the Lacquer.


@NetProphet , Is the rubber to sponge adhesion still ok? These are new rubbers so I assume rubber to sponge adhesion should be good and I did touch that part at all. Just applied the glue on the rubber sponge.

Can it happen due to cleaner? Seems like I put a lot of cleaner after the setup on the black side then realized that much was not needed and then gave less on the red side. But if I can remember I did wipe it quite a bit.
 

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says Pimples Schmimples
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Yes, I used this Blade Lacquer Revolution Nr.3 30ml. Laquer and Revolution Nr.3, Glue 50ml Normal Viscosity. I did apply 2 layers on the rubber and 1 layers on the blade. Not sure if it was not thick enough and even let it dry and do the finger testing on not getting it sticky. and used a roller to fix it. I did not sand it though after doing the Lacquer.
A bump like that just means that you've spread something unevenly.
It could be the lacquer (I've used lacquer before that was too thick and had to sand it back to get the surface properly flat again.
Or most likely it's the glue that's spread unevenly with too much on that area of the rubber and/or the blade. This is easy to do and spreading the glue sometimes takes a bit of practice and patience to get it just right.

@NetProphet , Is the rubber to sponge adhesion still ok? These are new rubbers so I assume rubber to sponge adhesion should be good and I did touch that part at all. Just applied the glue on the rubber sponge.
The rubber is fine then. It was just the slightly blurred picture that made me think it may have been some bubbling between the sponge and rubber but looking at the new pic I reckon it's just the glue job.
Can it happen due to cleaner? Seems like I put a lot of cleaner after the setup on the black side then realized that much was not needed and then gave less on the red side. But if I can remember I did wipe it quite a bit.
What do you mean by cleaner? Do you mean rubber cleaner?
I can't imagine how that would effect the sponge like that but I guess it's possible depending on what cleaner it was and if it got between the sponge and rubber? It's probably fine though and I'd expect a careful regluing to solve things.
Regluing an already cut rubber is a bit trickier as you have to be more careful in lining it up to be square with the blade on both sides but it is definitely possible to get a really good fix.
If you're not confident to do it then maybe ask someone at your club who had more experience to do it for you?
Best of luck!
 
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says Pimples Schmimples
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Thanks @NetProphet . For regluing do I need to again lacquer as I already did it? and How can I remove the glue from the sponge and blade? Does it needs to be
No need to relaquer.

Removing any glue from the blade is easy, if theres any remaining after removing the rubber it will just rub off the blade without issue.

Removing it from the rubber can be a pain in the a$$ sometimes but basically you have to VERY CAREFULLY peel it from the sponge WITHOUT damaging the sponge.

If you're lucky the glue will come off in large pieces as you stretch it from the sponge.
If you're unlucky the glue will keep tearing and take ages to get it all off.
The thicker the glue layer then (usually) the easier it is to remove as thicker glue layer tend not to tear as you remove them, this is the main reason that I use minimum 2 layers on the sponge when applying.

If the glue keeps tearing as you're removing it one thing that can make is easier is to apply another layer of glue over what's already there and wait an hour or two. Then you have a thicker layer that hopefully comes off more easily.
Rakza 7 sponge (as great as it is to play with) has proved to be relatively brittle in in this regard (in my experience) so do be extra careful so as not to damage it.
 
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Don't worry, this looks perfectly playable.
Unless the rubber is actually coming off, or you find obvious dead spots by bouncing a ball, this is fine.
Rakza 7 shows uneven glueing very quickly, so any little ridge or bump in the glue layer will be visible on the surface. I suspect Vega Europe to do the same but haven't glued that personally.

Don't take it off. Rubbers like these get worse if you keep taking them off. Just go out and enjoy.
 
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says Pimples Schmimples
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Don't worry, this looks perfectly playable.
Unless the rubber is actually coming off, or you find obvious dead spots by bouncing a ball, this is fine.
Rakza 7 shows uneven glueing very quickly, so any little ridge or bump in the glue layer will be visible on the surface. I suspect Vega Europe to do the same but haven't glued that personally.

Don't take it off. Rubbers like these get worse if you keep taking them off. Just go out and enjoy.
Would you really leave your racket like that and play it for 6-8 months, or however long the rubbers last?
There's no way I could leave my racket like that! Maybe I'm a bit OCD? 😬
 
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Would you really leave your racket like that and play it for 6-8 months, or however long the rubbers last?
There's no way I could leave my racket like that! Maybe I'm a bit OCD? 😬
No, I would try to fix it and by that make the rubber worse.
 
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@Tyce @NetProphet , After playing with the blade the black started coming off so eventually I ended up removing the rubber. But I am unable to remove the glue from the rubber or let me say the other way around, I dont find much of glue in the rubber at the first place. It seems like everything is soaked.

I am sure that I did apply 2 layers on it. Am I missing something?
 
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