MCreator issue tracker has been migrated to GitHub.
Existing tickets have been migrated to GitHub. Please open new tickets on the GitHub tracker instead. If you do not have a GitHub account, all feature requests and bug reports from MCreator forums are still considered and checked by the maintainers.
We will consider adding this in the future updates. For now, you can manually edit the smeltStack ItemStack size in the code editor to set it to a custom value.