iTopSpin
Current Posts => Collecting, Modding, Turning and Spin Science => Topic started by: Joah on November 21, 2020, 06:35:43 PM
-
Hello Everyone!
It's been a while since I've posted. I've been busy learning how to make molds for casting Cerrotru allow, a non-toxic mix of tin and bismuth. Why learn this? With the rarity of beigoma tops in the states I wanted a way to take my 3D printed beigoma and cast them in metal. To make a beigoma good in the arena you need to heavily modify them. Since, I am quite new to modding beigoma I didn't want to alter my antique one and make a mistake....nor did I want to wait close to a month for new ones to be delivered. So I decided to make my own...again...!
(https://live.staticflickr.com/65535/50630450311_3979236580_k.jpg) (https://flic.kr/p/2k93hWt)IMG_20201117_000125975 (https://flic.kr/p/2k93hWt) by Joah Tang (https://www.flickr.com/photos/190579969@N08/), on Flickr
The first step I took to making my own metal beigoma was to redesign my original 3D printed ones.
(https://live.staticflickr.com/65535/50630458526_1d1be42f2e_b.jpg) (https://flic.kr/p/2k93ko7)beigomamasters (https://flic.kr/p/2k93ko7) by Joah Tang (https://www.flickr.com/photos/190579969@N08/), on Flickr
I did this in Tinkercad, a free 3D design software. I printed them out and gave the tops a test spin. I did my best to sand and balance them before moving on to making a mold. I used PETG for the print and sanded it smooth with 400 grit sandpaper. I found a good tutorial on Crafsman YouTube channel for making low temp metal molds with EasyMold silicone putty. I followed these two videos:
https://youtu.be/1evLu0m2yCU
and
https://www.youtube.com/watch?v=piG04g76Ma8
Side note the CrafsMan is one of the best maker channels on YouTube in my opinion steady craftin!!!!
...anyways back to the tops...
Once the supplies arrived I took some sulfur free clay and Legos to make a two part mold.
(https://live.staticflickr.com/65535/50630450556_d74b90ff68_k.jpg) (https://flic.kr/p/2k93i1G)IMG_20201114_192731255_HDR (https://flic.kr/p/2k93i1G) by Joah Tang (https://www.flickr.com/photos/190579969@N08/), on Flickr
I was able to make two molds from 1Id of EasyMold. My third mold was made from 100% silicone and cornstarch. For a more in depth tutorial check out this tutorial on mold making from the amazing CrafsMan:
https://youtu.be/h6kh2RJl1dQ
After the molds had cured I took some Cerrotru alloy and melted it down in my HotPot2, basically a hand held foundry. The nice thing about this alloy is it melts around 281º F and it contains no led! The alloy is made in PA and can be found here: https://boltonmetalproducts.com/products/cerrotru-bolton-281
(https://live.staticflickr.com/65535/50629705758_8ad96da6e5_k.jpg) (https://flic.kr/p/2k8YtBm)IMG_20201114_204351210 (https://flic.kr/p/2k8YtBm) by Joah Tang (https://www.flickr.com/photos/190579969@N08/), on Flickr
Here's a quick video of my dragon beigoma being casted.
After lots of sanding I spun them and quickly realized yoyo string was not going to work so I made my own by doubling the string wraps in this yoyo string tutorial:
https://www.youtube.com/watch?v=yD8o6SnxadA&t=292s
I found 12 - 14 wraps work best. Also winding the string on the tight side helps too.
(https://live.staticflickr.com/65535/50629704928_e63332f821_k.jpg) (https://flic.kr/p/2k8Ytn3)IMG_20201121_164411323 (https://flic.kr/p/2k8Ytn3) by Joah Tang (https://www.flickr.com/photos/190579969@N08/), on Flickr
To sand the beigoma down I used a wood file and 100 - 800 grit sand paper.
(https://live.staticflickr.com/65535/50630549542_d10d711b44_k.jpg) (https://flic.kr/p/2k93Nrm)IMG_20201114_215733634 (https://flic.kr/p/2k93Nrm) by Joah Tang (https://www.flickr.com/photos/190579969@N08/), on Flickr
(https://live.staticflickr.com/65535/50629705158_ed326f1021_k.jpg) (https://flic.kr/p/2k8Ytr1)IMG_20201117_000125975(1) (https://flic.kr/p/2k8Ytr1) by Joah Tang (https://www.flickr.com/photos/190579969@N08/), on Flickr
(https://live.staticflickr.com/65535/50630549297_e2cb26982c_k.jpg) (https://flic.kr/p/2k93Nn8)IMG_20201121_135943525 (https://flic.kr/p/2k93Nn8) by Joah Tang (https://www.flickr.com/photos/190579969@N08/), on Flickr
Here is a compilation video of the beigomas battling:
https://youtu.be/IPOV6o8CqA8
In the future I hope to improve my design to spin longer in canvas arenas. Right now the Cerrotru beigomas will spin for 30 seconds in a canvas arena but will come close to 2 minutes on a plastic surface! It may just be my arena that is effecting the spin time...it will be upgraded in the future too. You can find the STL files here: https://www.thingiverse.com/thing:4661218
My next iteration will look something like this.
(https://live.staticflickr.com/65535/50629876333_937d3a5a30.jpg) (https://flic.kr/p/2k8Zmji)newbeigoma2 (https://flic.kr/p/2k8Zmji) by Joah Tang (https://www.flickr.com/photos/190579969@N08/), on Flickr
(https://live.staticflickr.com/65535/50630721707_bbafd2c276_z.jpg) (https://flic.kr/p/2k94FBH)newbeigoma1 (https://flic.kr/p/2k94FBH) by Joah Tang (https://www.flickr.com/photos/190579969@N08/), on Flickr
If anyone has any ideas, tips, or questions let me know I would love to discuss them!
-
Amazing! Never have I seen anyone do that sort of thing here. For your string I would suggest using chalk/mason line, although I can't quite remember what number works for beigomas; I know it's thicker than no. 21 cord.
You could make some decent money from making those! 8) 8) 8)
-
Brilliant! Every part of it.
Of course, using LEGO to frame the mold was especially brilliant.
-
Wow!! Very impressive.
-
Joah: 'Side note the CrafsMan is one of the best maker channels on YouTube in my opinion steady craftin!!!!'
Even though I'm not a caster/maker, I found the CrafsMan channel a while ago and really enjoy his creations. Great video production and style. A unique character to be sure. Keep on steady craftin!
-
muy interesante ese tipo de trompos
-
Amazing! Never have I seen anyone do that sort of thing here. For your string I would suggest using chalk/mason line, although I can't quite remember what number works for beigomas; I know it's thicker than no. 21 cord.
You could make some decent money from making those! 8) 8) 8)
Thanks, it was a fun experience! Good suggestion I will give it a try! If I remember correctly I think mason line is 2.5 - 3 mm thick which is a perfect thickness to make the tops hum. Maybe someday in the future I will sell some...still have a few bugs to work out...
-
Brilliant! Every part of it.
Of course, using LEGO to frame the mold was especially brilliant.
Thanks, I though you would like the LEGO mold case! Man, LEGOs are amazing when it comes to working with silicone.
-
Wow!! Very impressive.
Thanks!
-
Joah: 'Side note the CrafsMan is one of the best maker channels on YouTube in my opinion steady craftin!!!!'
Even though I'm not a caster/maker, I found the CrafsMan channel a while ago and really enjoy his creations. Great video production and style. A unique character to be sure. Keep on steady craftin!
Thanks you too! Yeah I like how he uses everyday or easy to find things to craft with. I love his positivity, makes Mondays so much better!
-
muy interesante ese tipo de trompos
Thanks, agreed they are very interesting tops. There are so many fun modification you can do to these tops.
-
Exelentes giros me gusta la decoración felicidades
-
parecen mucho los cliches que usamos para las tapas de figuras en los trompos de plastico
-
Exelentes giros me gusta la decoración felicidades
Thanks!
-
parecen mucho los cliches que usamos para las tapas de figuras en los trompos de plastico
Yes, some of my inspiration for the characters on my beigoma came from the Trompos Cometa Dragon tops. They are also based on the main protagonist and antagonist tops of the original Beyblade Anime, Dragoon(the Azure dragon) and Wolborg (the Artic wolf).