Hi 19sert! Sorry it took me so long to find your excellent questions! I usually have people send me emails from flexible jewelry molds dot com Cook your natural rubber molds for 7 1/2 minutes for each layer (1/8 inch cooks for 7 1/2 minutes) A mold 1 inch thick should bake for one hour. It is better if your molds do not have vent holes. Look for a little mold rubber squeezing out between the mold frame and the mold plate.
hello! just found this excellent video. Do you time 45 minutes from the moment you turn on the cold vulcanizer or preheated to the specific temperature? thank you
Thank you for your compliment and excellent question, Sambora Jewelry. I preheat my vulcanizer to the specific temperature. I use a thermometer to measure the temperature. It actually only takes my vulcanizer about 13 minutes to reach 350°F, or 177°C.
@@sambora.jewelry My first pyrometer was a simple cooking thermometer. It went up to 450 or 500 degrees Fahrenheit. I used that to measure the temperature in my will vulcanizer. Later, when I could afford it, I bought a digital pyrometer through Rio Grande Albuquerque.
Have you ever tried to make a rubber mold of a 3D printed ring? The melting point of PLA (common plastic material for 3D printing) is 302-320 degrees F.. it's really close to the vulcanization temperature so I'm guess it might not work.
Nate Snippe Thank you for your excellent question. VLT rubber from Castaldo (160F) as well as 4X Zero Shrink (250F) rubber from Zero D Products both vulcanize at lower temperatures. I tend to use RTV compounds to mold RP or 3D printed models.
After being away from Google for a while... RChelicopter...Riogrande.com and Stuller.com. Unitedpmr.com is also a good source. Compare them to find the day's lowest price as they each have different methods of pricing their stuff. Make friends at gem shows. Learn about gems. Buy them from your trusted friends...
Sleepy Mexican't Hi Sleepy. Thanks for your excellent question. The answer might depend on where you live... I get my rubber from riogrande.com. Here is the page to get mold rubber: www.riogrande.com/Product/Castaldo-Gold-Label-1-4-Mold-Rubber-Strips-5-lbs/701108?Pos=36 Have I answered your question?
19sert, Thanks for your excellent questions about how long to vulcanize your molds. Please send requests for immediate replies to my email address no spaces: chuck.hunner at flexible jewelry molds dot com. 4 1/8 inch thick layers = 4 x 7.5 minutes = 30 minutes. 6 layers is 6 x 7.5 minutes = 45 minutes.
damok9999 Why not invest in an aluminum mold frame, mold plates, and a couple of C clamps? Then you could bake your mold in a kitchen oven. The world is an expensive place. When you begin to invest enough of yourself in it, it will invest in you! Castaldo has a good article on oven baked molds at www.castaldo.com/english/use/u_athome.html Best Regards, Chuck
Chuck Hunner Cool that was the next thing I was wondering, if you can bake in the oven. I would still need the tools to finish the lost wax method though... I think i should start mastering that side before making the molds. Still now that I know a cheaper method i will keep the possibility available in the near future. Thanks! I have so many unique ring ideas, many require a mold or hand etching to reproduce so this will be required to complete my goals. I see the molds like you are making alone sell for $20 minimum on ebay : )
My molds are $30 minimum for a simple, band ring. I always use silicone rubber to make my molds. I know several artists who just have an alcohol lamp, a pointy exacto razor knife, and a couple of dental tools to carve their waxes. They send the waxes to places like silvercloudcasting.com/ in Albuquerque or jewel-craft.com in Cincinnati.
Brilliant! Thank you so much!!
Hi 19sert!
Sorry it took me so long to find your excellent questions! I usually have people send me emails from flexible jewelry molds dot com
Cook your natural rubber molds for 7 1/2 minutes for each layer (1/8 inch cooks for 7 1/2 minutes) A mold 1 inch thick should bake for one hour.
It is better if your molds do not have vent holes. Look for a little mold rubber squeezing out between the mold frame and the mold plate.
Mold frames that have vent holes allow the mold rubber to shrink a little more than those with no vent holes!
Well Done ! An Thanks for not being a DJ !!!!!!
good clear instruction movie
thanks man this helps yet there some other ways do you know them ?
hello! just found this excellent video. Do you time 45 minutes from the moment you turn on the cold vulcanizer or preheated to the specific temperature? thank you
Thank you for your compliment and excellent question, Sambora Jewelry. I preheat my vulcanizer to the specific temperature. I use a thermometer to measure the temperature. It actually only takes my vulcanizer about 13 minutes to reach 350°F, or 177°C.
@@chuckhunner thank you Chuck! Wher do you get that pirometer for meaisurering temperature?
@@sambora.jewelry
My first pyrometer was a simple cooking thermometer. It went up to 450 or 500 degrees Fahrenheit. I used that to measure the temperature in my will vulcanizer. Later, when I could afford it, I bought a digital pyrometer through Rio Grande Albuquerque.
Have you ever tried to make a rubber mold of a 3D printed ring? The melting point of PLA (common plastic material for 3D printing) is 302-320 degrees F.. it's really close to the vulcanization temperature so I'm guess it might not work.
Nate Snippe Thank you for your excellent question. VLT rubber from Castaldo (160F) as well as 4X Zero Shrink (250F) rubber from Zero D Products both vulcanize at lower temperatures. I tend to use RTV compounds to mold RP or 3D printed models.
if that was a ring it must be one size fits all? then you just make it smaller to make the correct ring size?
Where do you all get your whole sale metals and stones from? I am getting into fine jewelry design and making.
After being away from Google for a while...
RChelicopter...Riogrande.com and Stuller.com. Unitedpmr.com is also a good source. Compare them to find the day's lowest price as they each have different methods of pricing their stuff.
Make friends at gem shows. Learn about gems. Buy them from your trusted friends...
Some people seem confused by this video. Please ask questions and I'll do my best to answer them.
Hi Chuck!
Nice to see a productive video!
All the best and Haapy Holidays!
Kas
Kassia Sobey Thanks, Kas!
where can i get this rubber and what exactly do i ask or look for?
Sleepy Mexican't Hi Sleepy. Thanks for your excellent question. The answer might depend on where you live...
I get my rubber from riogrande.com.
Here is the page to get mold rubber: www.riogrande.com/Product/Castaldo-Gold-Label-1-4-Mold-Rubber-Strips-5-lbs/701108?Pos=36
Have I answered your question?
45 minutes is enough for all model Rubber (castaldo)this rubber was too much in Vulcanizer (the color of rubber show that)
19sert,
Thanks for your excellent questions about how long to vulcanize your molds. Please send requests for immediate replies to my email address no spaces: chuck.hunner at flexible jewelry molds dot com.
4 1/8 inch thick layers = 4 x 7.5 minutes = 30 minutes. 6 layers is 6 x 7.5 minutes = 45 minutes.
Too bad it is such a hefty initial investment for the rubber vulcanizer... $600 - $1200 ouch.
damok9999 Why not invest in an aluminum mold frame, mold plates, and a couple of C clamps? Then you could bake your mold in a kitchen oven. The world is an expensive place. When you begin to invest enough of yourself in it, it will invest in you! Castaldo has a good article on oven baked molds at www.castaldo.com/english/use/u_athome.html
Best Regards,
Chuck
Chuck Hunner
Cool that was the next thing I was wondering, if you can bake in the oven. I would still need the tools to finish the lost wax method though... I think i should start mastering that side before making the molds. Still now that I know a cheaper method i will keep the possibility available in the near future. Thanks! I have so many unique ring ideas, many require a mold or hand etching to reproduce so this will be required to complete my goals. I see the molds like you are making alone sell for $20 minimum on ebay : )
My molds are $30 minimum for a simple, band ring. I always use silicone rubber to make my molds. I know several artists who just have an alcohol lamp, a pointy exacto razor knife, and a couple of dental tools to carve their waxes. They send the waxes to places like silvercloudcasting.com/ in Albuquerque or jewel-craft.com in Cincinnati.
Chuck Hunner
Oh I see, one could start carving wax first. I didn't realize there are third party casters out there.
Right - plenty of companies that do 'contract casting' for wax carvers and jewelers.
This made me more confused than I already was. Wtf?
Please ask specific questions.