Silicone mold making rubber - resin jewelry making - make your own casting molds

Sold by ResinObsession
Free shipping
In stock
Preparation takes 1-2 business days
Arrives from the United States

Item details

Make your own molds! Use them to cast jewelry, toys pieces or cars. All formulas mix in a 10:1 ratio and can be used in a temperature range of -67 to 395 degrees F. Vacuum degassing is not required with any of these silicone kits. Choose from 3 versatile 1 pound kit formulas:


Alumilite Quick Set flexible moldmaking rubber is perfect for making a general purpose mold with medium hardness. Perfect for simple 1 and 2 piece molds. Alumilite Quick Silicone has a 30 minute open time and demolds in 8 to 18 hours. The final mold has a tear strength of 20.

Alumilite High Strength #2 silicone flexible moldmaking rubber for when you need flexibility and good dimensional stability when making multiple piece molds and great for molds with undercuts. This silicone has a 1 hour open time and demolds in 18 hours. The final mold tear strength is 145.

Alumilite High Strength #3 silicone flexible moldmaking rubber is perfect for making strong, soft, flexible molds, and great for undercut parts. This silicone has a 1 hour open time and demolds in 18 hours. The final tear strength of 110.

So you may be wondering what is the difference between the #2 and #3 rubber is. The only difference between the two rubbers is the hardness. The High Strength 3 is softer and more flexible making it a better choice for one piece molds that contain deep undercuts or negative drafts. The High Strength 2 has better dimensional stability and is better suited for less undercut one piece molds and for two piece molds due to the stiffer nature of the cured rubber allowing it to line up better with a second half of a two piece mold.

Average review
Jan 12, 2016 by Eric Johnson
Jan 12, 2016 by Eric Johnson
Great item at a great price, it was shipped well and quickly! I will definitely be back.
Apr 8, 2015 by Deborah Gregory
Superior product. Not silicone is better. Sets with no bubbles to give you a silky smooth mould that works well. I cannot more highly commend resinobsession for their customer service. They go above and beyond to deliver very high quality customer service. Will be back for sure
Nov 1, 2014 by michelle
Cool product. Much better than what the local hobby stores offer.
Aug 12, 2014 by Vickie Wyant

More from this seller

Shipping & policies
Preparation takes 1-2 business days
Arrives from the United States
Estimated Shipping
Shipping to
Zip or postal code

At RESIN OBSESSION we recycle packing materials and boxes that are saved for us by friends, neighbors and local businesses. It is just a little way for us to do our part in helping Mother Earth.

We try to ship the same day if possible, but it may be up to two business days before your package ships. You will receive notification from Etsy, along with any package tracking information, when your order leaves our studio.

DOMESTIC SHIPPING: We ship first class mail or parcel select mail to the United States and United States territories. Aerosol products and large quantity ORM-D items will ship via UPS ground. All packages ship with a package tracking number. Priority mail packages generally take 2 to 3 days for deliery, first class mail packages take 3 to 5 days for delivery and parcel select mail packages generally take 10 to 14 days for delivery. Parcel select packages going to places outside the continental United States can take up to 6 weeks to deliver. UPS packages take 1 to 6 business days for delivery. If you need your package delivered by a specific deadline, please message us before placing your order.

INTERNATIONAL SHIPPING: International orders are shipped by first class mail, which may take up to 6 weeks. If you need your item sooner, please contact me before placing your order so we can make arrangements. Any additional customs charges are buyer’s responsibilities. Many, but not all, of our international packages ship with a package tracking number.

We are now working with a third party shipping service to bring you lower international shipping prices. As a result, it may take up to THREE days for your package to show movement when tracked at

Postage and UPS delivery times are estimated and NOT GUARANTEED. We are not responsible for these delivery services abilities (or lack thereof) to deliver your package in a timely fashion.

We do our best to accurately estimate upgraded and/or international shipping costs for each listing. We review every order that comes in and will make refunds for shipping overages when appropriate.


We accept Paypal, Visa, Mastercard, Discover and American Express. Please know that if you pay through Paypal with an eCheck, we will wait for your payment to clear before shipping your order.

Returns & exchanges
I gladly accept returns and exchanges
Contact me within: 14 days of delivery
Ship items back within: 30 days of delivery
I don't accept cancellations
But please contact me if you have any problems with your order.
The following items can't be returned or exchanged
Because of the nature of these items, unless they arrive damaged or defective, I can't accept returns for:
  • Custom or personalized orders
  • Perishable products (like food or flowers)
  • Digital downloads
  • Intimate items (for health/hygiene reasons)
Conditions of return
Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.
Additional return information
If you are unsatisfied with your order, simply contact Resin Obsession within 30 days of receiving your items. We cheerfully accept returns or exchanges on all unopened and unused items. Items need to be in saleable condition. Returned items must be received by us within 30 days of initiating your return or exchange. Customers are responsible for the cost of returning items to us. You are strongly urged to return items to us with delivery confirmation.

Orders should be packed and returned to us in the same method in which it was shipped to you. We reserve the right to charge a restocking fee for missing and/or broken items along with damaged items because contents were not properly packaged before returning to Resin Obsession.

In the case of lost and/or incorrectly addressed packages, these packages will need to be returned to us or a period of longer than 21 days from shipment (domestic orders) or 45 days from shipment (international orders) will need to have passed in order for us to process a refund or replace the order at our discretion. We do not offer refunds or replacements on international orders when it shows the package is being held by customs of the delivery country. You will need to contact your local customs agent to inquire about receiving your package.

Additional policies

Customer service is very important to us. If you have problems with one of our products, please contact us for technical support. We are happy to help you get the most from your purchase.