Not at all!

If the VAT is well leveled, minimum resin requirement is about 80ml. Yes, you can recycle the resin. However, the property of leftover resin is slightly changed after each use. We recommend mixing one portion of the old resin with one portion of the fresh resin to maintain the stability of the resin. Therefore, it is better to store the leftover in another container. Also, please remember to filter the resin to avoid damaging the Teflon film. Thanks!