why wait to dry the glue?

[Zwill]

Another glue related question, what does it mean when the glue goes 'grainy' while spreading with the sponge?
Have I left it too long, is the glue old, is it the sponges?
I use DHS 15 glue and have had this happen even after opening a brand new bottle.
Very annoying, I must be doing something wrong...

It's drying quickly. DHS No 15 dries so fast... You should spread it quickly.

 

[lodro]

It's drying quickly. DHS No 15 dries so fast... You should spread it quickly.

I have only just started to use the DHS15 and it really does dry very quickly. I also found it too thick for my liking and have thinned the glue using a solution of 1% ammonia.

 

[Zwill]

I have only just started to use the DHS15 and it really does dry very quickly. I also found it too thick for my liking and have thinned the glue using a solution of 1% ammonia.

Yes, it's the thickest glue I know. It's also heavy because of it. I like the Sueke No 2 better since it dries slower, and a bit lighter and softer. But DHS no15 is still top glue.

 

[Cadoia]

this is likely because there is no difference. 😂
when you do the dry method and then later when you "peel" the glue back off the rubber or the blade and see how thin and even these glue-membranes are you will find out why there is no difference.

I can SEE a difference on the surface on the rubber. wet gluing makes it way more smooth and flat.
Just because I cant FEEL a difference, doent mean there isnt one. Just too little for me to feel it.

 

[Cadoia]

Another glue related question, what does it mean when the glue goes 'grainy' while spreading with the sponge?
Have I left it too long, is the glue old, is it the sponges?
I use DHS 15 glue and have had this happen even after opening a brand new bottle.
Very annoying, I must be doing something wrong...

I had same issue. Plus other issues with dry gluing. Which is why I tried wet gluing instead.

 

[lodro]

I can SEE a difference on the surface on the rubber. wet gluing makes it way more smooth and flat.
Just because I cant FEEL a difference, doent mean there isnt one. Just too little for me to feel it.

fair enough, but iffen you can't feel the difference, why bother ??? 😂

 

[Cadoia]

fair enough, but iffen you can't feel the difference, why bother ??? 😂

im danish. want my rubber to be perfectly flat.
and who knows, even if i cant feel it there might be a difference.

 

[lodro]

im danish. want my rubber to be perfectly flat.
and who knows, even if i cant feel it there might be a difference.

sorry, i forgot that you were danish, that explains a lot . 😁😁😁
Neee, just kidding, I enjoyed my time on the flat island of Fyn.

 

[riemsesy]

I did a little experiment with wet-glueing, with a homemade "press"

I used DHS nr 15. Only glue on the rubber, with a spatula

no glue spilling:

the result

https://imgur.com/zhPVoLu

https://imgur.com/m7a4YrL

total weight 193 grams (Big Dipper added 57 grams to the blade, boosted twice and glue layer)
cons:
It takes more time, and most of the time is waiting time
You need to have a sealed blade, just as a precaution like others mentioned for the moisture

pre:
very little glue used
spreading of glue is easy and quickly done
no spilling of glue
flat result
no curling edges (though I should try it with more domed rubbers)
positioning is easier, blade can be moved before being pressed.

 

[lodro]

I did a little experiment with wet-glueing, with a homemade "press"

I used DHS nr 15. Only glue on the rubber, with a spatula

no glue spilling:

the result

https://imgur.com/zhPVoLu

https://imgur.com/m7a4YrL

total weight 193 grams (Big Dipper added 57 grams to the blade, boosted twice and glue layer)
cons:
It takes more time, and most of the time is waiting time
You need to have a sealed blade, just as a precaution like others mentioned for the moisture

pre:
very little glue used
spreading of glue is easy and quickly done
no spilling of glue
flat result
no curling edges (though I should try it with more domed rubbers)
positioning is easier, blade can be moved before being pressed.

Nice one, good work.
Looks like it will all come down to the good old: "Six of one or half
a dozen of the other".
There is one other important aspect that has never been properly tested and that is how strong the bond is and if it is weaker using the "wet method" compared to the "dry method".

 

[riemsesy]

Is it stronger or is it strong enough.
I have some speed glue here and it definitely isn’t as strong as latex glue, but the bond is strong enough for the rubbers to hold.
Wet glueing is definitely strong enough.
It’s just more work. The result is perfectly flat.
And even that is a question, normal glueing is it flat enough? Or is it a mind game. 😊

 

[_ak]

By the way, tried this glue

Liulan Blue Waterbased Glue

https://a.aliexpress.com/_EIS1N5z

It's very thin but still can be easily peeled off

 

[Giovanni Greco]

Curiously, wet gluing is Soulspin's recommended gluing method: https://soulspin.de/en/table-tennis-tutorials/wet-gluing-table-tennis-rubbers/

I think it works if it's used only a few amount of glue.
Furthermore i have some doubt about waiting only one hour to cut the first rubber, i think it should dry more hours, also 12 hours for the second rubber to be ready to be cut and played seems to be too little, because water evaporate much slowly than in dry glueing.
I use dry glueing letting dry rubbers for at least 8 hours, and using very few glue on wood letting dry it one hour or more if needed for each side, and all works fine.

 

[Giovanni Greco]

I can SEE a difference on the surface on the rubber. wet gluing makes it way more smooth and flat.

Imo, if You spread well the glue and let it dry very long time (10 hours, for example), the glue become smooth and flat, and so the rubber glued; it's only needed to avoid grains on the glue layer.
The rubber works fine when playing, and this is enough for me.

 

[thisisit]

I did a little experiment with wet-glueing, with a homemade "press"

I used DHS nr 15. Only glue on the rubber, with a spatula

no glue spilling:

the result

https://imgur.com/zhPVoLu

https://imgur.com/m7a4YrL

total weight 193 grams (Big Dipper added 57 grams to the blade, boosted twice and glue layer)
cons:
It takes more time, and most of the time is waiting time
You need to have a sealed blade, just as a precaution like others mentioned for the moisture

pre:
very little glue used
spreading of glue is easy and quickly done
no spilling of glue
flat result
no curling edges (though I should try it with more domed rubbers)
positioning is easier, blade can be moved before being pressed.

people usually do most things because of habit or because they are told this is how it's done and don't spend time explaining to themselves.

the recommendation waiting for most of the water evaporate from glue before gluing rubber to blade started out as a way for making the paddle get from preparation to play faster. while it's certainly faster to make it from gluing to play this way, the downside is that it's harder to execute the technique because you can't move the rubber to adjust it on the wood if glue is mostly dry.