I tried extending 1 inch racquet length (3D printed buttcap)

Dalf

New User
Hi everyone,

I'd like to share my experiment about extending my racquet by 3D printing a 1 inch buttcap. All the buttcaps are solid, no hollow inside. The racquet I decided to try is the Yonex Vcore Tour F 93. My first prototype is quite "traditional". It wraps over the handle so the handle is bigger than original. Because I flare the buttcap too much, I had to re-design it. This one weights about 37gr.
DSC_0348_zps2wckvh01.jpg


While I was making the second one, I thought to change the design a bit. This time there are parts that go into the hairpin. So that the handle won't be enlarged. This buttcap weights at 33gr.
DSC_0353_zpsla4rzxn4.jpg


Some pictures to compare between the buttcaps:
DSC_0355_zpsln79dq65.jpg

DSC_0356_zpstjublxvg.jpg


I need to file the buttcap a bit so it is able to stay flushed in the original handle. The buttcap looks a bit rough but still nice. I forgot to weight it again. I assume it weights about 30gr.
DSC_0357_zpsehnbfqne.jpg


I tried the hand staple gun in the other buttcap but failed. So this time, I only used glue (with the name Pattex 100%). I applied some pressure to keep buttcap and handle together, then left them in a day.
DSC_0363_zpsgskirugo.jpg


Finally, I wrapped few rounds of electrical tape to feel more secured, then replacement grip and overgrip. Here are some pictures of the finished racquet:
DSC_0368_zpsk5zozwk6.jpg

DSC_0369_zpsbkddaczv.jpg
DSC_0370_zpscyrc1fuj.jpg

DSC_0371_zpscqj680up.jpg

DSC_0372_zpso9jpobhv.jpg


I just played in 2 hours but it feels absolutely solid. At some times, I thought that the racquet is 28 inches originally. There's no sign of breakage or loose.

About the racquet itself, it weights at 362gr with everything ready to play. 31,5cm balance. Swingweight at 356. Lots of comfort playing with this racquet seriously. My arm was less sore after the session. 'Let the racquet to the work' really works. This Vcore Tour F 93 originally, has the strange stiff, rough feeling when I don't hit the balls at sweet spot. However, after extension, I don't have that feeling anymore. Returning heavy balls is very easy, especially when I hit at sweet spot. Power is great and it's one of the reasons why I attempted to lengthen a mid racquet while I didn't lose any control. In contrast, I felt that I have better control since I use my muscle less to generate power but more to control the racquet. I serve faster than ever before, as I can anticipate. Comparing to the Wilson Blade SW 104 (which is also 28 inches long), my racquet is less demanding. The SW 104 needs more work to swing it.

That's all I can think of to write at the moment. Would love to hear opinions from fellows players :).
 
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fritzhimself

Professional
Great story - you did good!
But I'm afraid that the massive buttcap will break you sooner or later. I have already printed many handles in 3D. Maybe you have already read some of my articles.



As you can see on the graphic - this is a Yonex handle by the way - I would remove something from the foamed handle and attach it directly to the hairpin.
This will certainly withstand the shearing forces better.
The graphic also shows that you can make an exception for the Yonex logo so that it looks like an original handle.
Maybe my contribution will inspire you and you'll get it right. Furthermore have fun tinkering and good luck.
 

IowaGuy

Hall of Fame
Nice work! I also play with an extended buttcap (1/2" XTP) on a ProStaff.

One drawback to your design is that it's very heavy. Might not be a problem for you, but most people probably don't want to add that much weight to the butt of their racket (drastically changes balance as well as adding weight). XTP buttcaps (commercially available for ~$10) weigh around 15 grams in comparison. You might be able to hollow out the buttcap somewhat, to shave off a few grams.

I like your hairpin connection (something the XTP buttcaps don't have). Did you glue that as well?
 

Dalf

New User
Fantastic job! It looks great and sounds like performance is top notch
Thank you. It is my main racquet now. Extending a mid size racquet is a treat :D.

Great story - you did good!
But I'm afraid that the massive buttcap will break you sooner or later. I have already printed many handles in 3D. Maybe you have already read some of my articles.



As you can see on the graphic - this is a Yonex handle by the way - I would remove something from the foamed handle and attach it directly to the hairpin.
This will certainly withstand the shearing forces better.
The graphic also shows that you can make an exception for the Yonex logo so that it looks like an original handle.
Maybe my contribution will inspire you and you'll get it right. Furthermore have fun tinkering and good luck.
Yes I saw some of your posts. Great works and feel like you're a professional :D. Your 3D handle design is brilliant. How do you remove the PU foam to insert the handle? It definitely withstands the shear load better. I need to learn CAD modeling more to make the handle as good as yours.

At the moment I see this extended racquet help preserving my body. Less stress striking the balls :-D.

Nice work! I also play with an extended buttcap (1/2" XTP) on a ProStaff.

One drawback to your design is that it's very heavy. Might not be a problem for you, but most people probably don't want to add that much weight to the butt of their racket (drastically changes balance as well as adding weight). XTP buttcaps (commercially available for ~$10) weigh around 15 grams in comparison. You might be able to hollow out the buttcap somewhat, to shave off a few grams.

I like your hairpin connection (something the XTP buttcaps don't have). Did you glue that as well?
Yep weight doesn't mind me much. I actually prefer head light feeling. I was worried about the breakage so decided to print a solid piece. I'll try to make it lighter if I extend my other racquets. This PLA material is very hard. The manual staple gun failed to do the job against it. I glued the parts that go into the hairpin too.

Nice work
Thank you :).
 

fritzhimself

Professional
You can easily cut the foamed handle with a metal saw by hand carefully all around until you feel a resistance (this is the hairpin) and do not cut any further.
Then simply pull it off or lever the part off with a screwdriver and leave the hairpin undamaged.
Btw - what handle size do you have?
Maybe I'll make the part for you like in the graphic. I like to support young talents.
 

Dalf

New User
You can easily cut the foamed handle with a metal saw by hand carefully all around until you feel a resistance (this is the hairpin) and do not cut any further.
Then simply pull it off or lever the part off with a screwdriver and leave the hairpin undamaged.
Btw - what handle size do you have?
Maybe I'll make the part for you like in the graphic. I like to support young talents.
Thank you very much for your help. I use handle size 3. I'll try your method in my other frames. How heavy is the handle like in the pictures you shared?

I made a video about my extended racquet. Playability is great :).
 

bleno567

Professional
Cool experiment!! I've been getting all my frames professionally extended an inch, and it does add a lot of static/swing weight. I've found that route will add about an ounce to the handle and ~40pts swingweight.

Swingweight in the 350s is the most I can handle for getting good racquet head speed, and I need the frame to stay under 12 ounces static to keep from wearing me out in the middle of sets. That's why I always start with the lightest frame I possibly can, e.g. vcore pro 100 (280g) or blade 98L.
 

2ndServe

Hall of Fame
Nice work, is there a plastic you can recommend? My wife knows how to use this stuff maybe we can STL files and try different molds. What printer did you use? I play with the sw104
 

Dalf

New User
How did you get the butt cap off the yonex. The staples are ridiculously hard to get off
I just used some knifes and scissors. It took a while to get it off but not too hard :D.

Cool experiment!! I've been getting all my frames professionally extended an inch, and it does add a lot of static/swing weight. I've found that route will add about an ounce to the handle and ~40pts swingweight.

Swingweight in the 350s is the most I can handle for getting good racquet head speed, and I need the frame to stay under 12 ounces static to keep from wearing me out in the middle of sets. That's why I always start with the lightest frame I possibly can, e.g. vcore pro 100 (280g) or blade 98L.
I will try to extend very light racquets also while keeping the swingweight high (~360). Let's see how it feels :D.

Nice work, is there a plastic you can recommend? My wife knows how to use this stuff maybe we can STL files and try different molds. What printer did you use? I play with the sw104
I just used PLA. The public library doesn't have many choices. The plastic works great btw. I remember the 3D printer is Ultimaker 3.
 

Shtangy

New User
Great story - you did good!
But I'm afraid that the massive buttcap will break you sooner or later. I have already printed many handles in 3D. Maybe you have already read some of my articles.



As you can see on the graphic - this is a Yonex handle by the way - I would remove something from the foamed handle and attach it directly to the hairpin.
This will certainly withstand the shearing forces better.
The graphic also shows that you can make an exception for the Yonex logo so that it looks like an original handle.
Maybe my contribution will inspire you and you'll get it right. Furthermore have fun tinkering and good luck.
Hey man do you have an stl file for this
 
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