Methods for additively manufacturing composite parts

A method of additively manufacturing a composite part, the method comprising:

• applying a liquid photopolymer resin to a non-resin component to create a continuous flexible line by pulling the non-resin component through a vessel, containing a volume of the liquid photopolymer resin, wherein the continuous flexible line comprises the non-resin component and a photopolymer-resin component that comprises at least some of the liquid photopolymer resin, applied to the non-resin component;
• routing the continuous flexible line into a delivery guide;
• pushing the continuous flexible line out of the delivery guide using a feed mechanism, wherein the feed mechanism comprises opposing rollers and a scraper that is in contact with at least one of the opposing rollers;
• removing, using the scraper, residue of the photopolymer-resin component, produced by the engagement between the opposing rollers and the continuous flexible line as the opposing rollers rotate to translate the continuous flexible line to push the continuous flexible line through the delivery guide;
• collecting, into a collection reservoir, the residue of the photopolymer-resin component, removed by the scraper;
• depositing, via the delivery guide, a segment of the continuous flexible line along a print path;
• and
• delivering curing energy at least to a portion of the segment of the continuous flexible line.