# Change Castable Wax 40 in Castable Wax **URL:** \ **Category:** Materials\ **Created:** [July 9, 2021, 4:51am UTC](https://forum.formlabs.com/t/change-castable-wax-40-in-castable-wax/31482 "2021-07-09T04:51:55Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![alessiospritz](https://avatars.discourse-cdn.com/v4/letter/a/7993a0/32.png) [@alessiospritz](https://forum.formlabs.com/u/alessiospritz)\ **Post date:** [July 9, 2021, 4:51am UTC](https://forum.formlabs.com/t/change-castable-wax-40-in-castable-wax/31482/1 "2021-07-09T04:51:55Z")
Hi everybody, I still have a lots of problems with Castable Wax 40. I have think start work with the purple, The Castable Wax. Does anyone have some experience with Castable Wax? ---
**Author:** ![dar5000](https://avatars.discourse-cdn.com/v4/letter/d/ecc23a/32.png) [@dar5000](https://forum.formlabs.com/u/dar5000)\ **Post date:** [July 18, 2021, 4:22pm UTC](https://forum.formlabs.com/t/change-castable-wax-40-in-castable-wax/31482/2 "2021-07-18T16:22:51Z")
I just tried my first print with Castable Wax 40. New tank, new cartridge. I’m making a copy of my relatively thick wedding band. The file I sent to the printer has 4 copies of my ring oriented different ways just to see which one printed best. Well, none of them. 3 are missing entirely, and the 4th (oriented vertical) was kinda half there. ![20210719_012106](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/9/b/9b347538f7ec8fa597196119fa80f6ae21ab8d7f.jpg) What kind of issues are you having? ---
**Author:** ![alessiospritz](https://avatars.discourse-cdn.com/v4/letter/a/7993a0/32.png) [@alessiospritz](https://forum.formlabs.com/u/alessiospritz)\ **Post date:** [July 19, 2021, 2:02am UTC](https://forum.formlabs.com/t/change-castable-wax-40-in-castable-wax/31482/3 "2021-07-19T02:02:29Z")
I have same problem, I’m looking for solve, but seems really difficult. This is the second cartridge I use, the first was good, but this one is impossible to work ---
**Author:** ![Jackson](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/jackson/32/17924_2.png) [@Jackson](https://forum.formlabs.com/u/Jackson)\ **Post date:** [July 19, 2021, 2:51pm UTC](https://forum.formlabs.com/t/change-castable-wax-40-in-castable-wax/31482/4 "2021-07-19T14:51:38Z")
Hi @alessiospritz, I’m so sorry that you’re having trouble! As a first step, I’d recommend [checking the age of your resin](https://support.formlabs.com/s/article/Resin-Care?language=en_US#lot-number)—it may have expired! All Formlabs resins have a shelf life of 12-24 months, and if your resin is past this date, you will not experience optimal results. You can also check the clarity and cleanliness of the optical surfaces within your printer. If prints are failing across multiple resins, the issue is likely with your printer, not the Castable Wax 40 resin. Lastly, if you’re still having trouble, I’d recommend [reaching out to our support team](https://support.formlabs.com/s/contact-support?language=en_US). We have a dedicated person on the team for resolving dental and jewelry issues, and they are very experienced with our castable wax resin. They’ll be happy to help resolve this issue and get you back to printing successfully! ---
**Author:** ![alessiospritz](https://avatars.discourse-cdn.com/v4/letter/a/7993a0/32.png) [@alessiospritz](https://forum.formlabs.com/u/alessiospritz)\ **Post date:** [July 21, 2021, 7:20am UTC](https://forum.formlabs.com/t/change-castable-wax-40-in-castable-wax/31482/5 "2021-07-21T07:20:11Z")
![20210721_140909%20(FILEminimizer)](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/9/f/9f999a93ab9fa03b3e0dc4f30577e209ab243271.jpg) Hi Jackson, this is the label in the cartridge, I buy in June. Thank you ---
**Author:** ![Jackson](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/jackson/32/17924_2.png) [@Jackson](https://forum.formlabs.com/u/Jackson)\ **Post date:** [July 25, 2021, 1:01am UTC](https://forum.formlabs.com/t/change-castable-wax-40-in-castable-wax/31482/6 "2021-07-25T01:01:26Z")
Hi @alessiospritz, Thanks for the reply! Based on that image, the age of your resin should be okay. Did you have a chance to clean the optical surfaces of your printer? If you need help with that step, here are instructions for the [Form 2](https://support.formlabs.com/s/article/Cleaning-the-Glass-Optical-Window-Form2?language=en_US) and the [Form 3](https://support.formlabs.com/s/article/Cleaning-the-Glass-Optical-Window-Form3?language=en_US). If you’re still having trouble, I’d recommend [reaching out to our support team](https://support.formlabs.com/s/contact-support?language=en_US). They’ll be happy to help resolve this issue as quickly and efficiently as possible!