Hello Chuck, your videos are very helpful and very well explained. I was wandering if you could share any tips and tricks on avoiding parting lines or on keeping them into absolute minimum. Thank You
Hi Marcin, Thanks for your excellent questions. I avoid parting lines by cutting the molds with a sharp blade. If I feel the blade dragging or see striations in the cut surface, I know the blade is less sharp than it could be, so, I change the blade. I also do my best to make long, even cuts along the plane on which I want my parting mark. I avoid making short, choppy cuts next to the model as much as possible. Even vulcanization of the mold, even and flat pressure on the mold plates on the outside of the mold during wax injection, wax that is not over-heated, and the lowest injection pressure you can use and still fill the mold cavity. Also, time your injection so that you stop injecting wax as soon as the mold is filled! Whew! That is a bunch of tips. Looks like several more videos need to be made. :-) Thank You for your inspiration, Marcin. I'm always happy to answer any questions.
@@chuckhunner have you tried vulzanizing 3d printed models. Thats what I will be trying to do. Any tips? Will be using vlt silicone, and how do i pack the mold so that i dont need as much pressure not to crack the model? Also should i coat the model with oil or lubricant to prevent it from sticking to the mold?
@@TheToxicFPS I've vulcanized them. Spray with fine mist of teflon. I carefully packed the mold with bits and pieces of VLT so that the silicone did not have far to flow. I prefer pouring a two part RTV mold around 3d models. They never break that way until I cut the mold. Then I can still get injections out of the RTV mold.
Find out more about the properties of VLT here: www.castaldo.com/wp-content/uploads/2022/01/Castaldo-VLT-Datasheet-2022-SECURE.pdf and a useful silicone rubber comparison sheet here: www.castaldo.com/wp-content/uploads/2020/08/Castaldo-Silicone-Molding-Rubber-Overview-Datasheet.pdf
شكرا على كلماتك الرقيقة ندى فوزي. يسعدني دائمًا الرد على أي أسئلة. Thank you for your kind words, Nada Fawzi. I'm always happy to answer any questions. Thank you, creator. The video helped me a lot... Greetings
How is the shrinkage on Vlt silicone? They advertise .01 shrinkage. Also is the vlt mold good for fine filigree type settings? What is your wax pressure in Vlt? Thanks ahead of time.
Thanks for your excellent question, Joel. I've never measured the shrinkage on the VLT. It is super low and that was what I wanted. Try some VLT to see how it works with your fine filigree. I think it's great for undercuts. Notice that on Castaldo's advertising they use a picture of a filigree butterfly in their mold. Assume that Castaldo wants you, their customer, to be super happy with their product ... and to buy more. What if you have a filigree model and mold it with VLT and it does not work. Will you be happy? I trust Castaldo to recommend products that work. I use wax injection pressures between 3 psi and 14 psi. Low pressures for smaller items, higher pressure for items I want to fill quickly and completely. I always expect to experiment a bit with the pressure. I have a good idea of what to expect, but, always depend on the notes I make when I experiment with a new item to guide me when I come back to it for production later.
Hello Chuck, your videos are very helpful and very well explained. I was wandering if you could share any tips and tricks on avoiding parting lines or on keeping them into absolute minimum. Thank You
Hi Marcin, Thanks for your excellent questions. I avoid parting lines by cutting the molds with a sharp blade. If I feel the blade dragging or see striations in the cut surface, I know the blade is less sharp than it could be, so, I change the blade. I also do my best to make long, even cuts along the plane on which I want my parting mark. I avoid making short, choppy cuts next to the model as much as possible. Even vulcanization of the mold, even and flat pressure on the mold plates on the outside of the mold during wax injection, wax that is not over-heated, and the lowest injection pressure you can use and still fill the mold cavity. Also, time your injection so that you stop injecting wax as soon as the mold is filled! Whew! That is a bunch of tips. Looks like several more videos need to be made. :-) Thank You for your inspiration, Marcin. I'm always happy to answer any questions.
Thanks Chuck! Another very helpful video. Cheers mate.
just found your videos and website, very helpful, thank you
Glad you like'em. I'm always happy to answer any questions
@@chuckhunner have you tried vulzanizing 3d printed models. Thats what I will be trying to do. Any tips? Will be using vlt silicone, and how do i pack the mold so that i dont need as much pressure not to crack the model? Also should i coat the model with oil or lubricant to prevent it from sticking to the mold?
@@TheToxicFPS I've vulcanized them. Spray with fine mist of teflon. I carefully packed the mold with bits and pieces of VLT so that the silicone did not have far to flow. I prefer pouring a two part RTV mold around 3d models. They never break that way until I cut the mold. Then I can still get injections out of the RTV mold.
And thanks for your info !
thank you for video.
Find out more about the properties of VLT here: www.castaldo.com/wp-content/uploads/2022/01/Castaldo-VLT-Datasheet-2022-SECURE.pdf and a useful silicone rubber comparison sheet here: www.castaldo.com/wp-content/uploads/2020/08/Castaldo-Silicone-Molding-Rubber-Overview-Datasheet.pdf
شكرا لك يا مبدع أفادني الڤيديو كثيرا ... تحياتي
شكرا على كلماتك الرقيقة ندى فوزي. يسعدني دائمًا الرد على أي أسئلة. Thank you for your kind words, Nada Fawzi. I'm always happy to answer any questions. Thank you, creator. The video helped me a lot... Greetings
How is the shrinkage on Vlt silicone? They advertise .01 shrinkage. Also is the vlt mold good for fine filigree type settings? What is your wax pressure in Vlt? Thanks ahead of time.
Thanks for your excellent question, Joel. I've never measured the shrinkage on the VLT. It is super low and that was what I wanted. Try some VLT to see how it works with your fine filigree. I think it's great for undercuts. Notice that on Castaldo's advertising they use a picture of a filigree butterfly in their mold. Assume that Castaldo wants you, their customer, to be super happy with their product ... and to buy more. What if you have a filigree model and mold it with VLT and it does not work. Will you be happy? I trust Castaldo to recommend products that work.
I use wax injection pressures between 3 psi and 14 psi. Low pressures for smaller items, higher pressure for items I want to fill quickly and completely. I always expect to experiment a bit with the pressure. I have a good idea of what to expect, but, always depend on the notes I make when I experiment with a new item to guide me when I come back to it for production later.
👌👍
Hi Anand, Thanks for your kind emojis for my video. May I answer any questions about mold making for you?
@@chuckhunner
Ham hindi me bat kar sakte hay
@@anandwaikar2511 Yes, We can talk in hindi when I use translate.google.com