- 1 refill filament for 1 friend who purchase with coupon code.

- Free refill filament credit will go in 7 business days after your friend’s purchase.

- Must follow refill Wednesday promotion rule to redeem credit.

- Coupon code can only be redeemed 3 times

- Coupon code and free refill filament credit will both have a 30 days expiration period.

- Referral program ends 6/30/2016

Please be aware that promotional purchase and credit usage transactions have special refund policy as described below.

- must refund ALL items in purchase transaction

- credits will be returned, but 30 days expiration does not extend