Cheapest ASA filament in the UK

ASA prints like ABS but holds its colour and strength outdoors, making it the go-to for UV-exposed parts. SpoolDeal follows 146 ASA listings on Amazon UK, Eryone UK and SUNLU UK and re-checks them through the day, so the prices on this page reflect what you would actually pay at checkout rather than a cached snapshot. The cheapest ASA listing we are tracking right now is £13.99, which works out at £11.67 per kilogram. 25 of those listings are at least 5% below their usual 90-day price right now.

ASA is best suited to garden and outdoor fittings, drone and RC parts, signage, and vehicle exterior components. As a starting point, print ASA at 240–270°C with the bed at 90–110°C; it needs an enclosure to stop warping. Finished parts hold their shape to about 100°C. Like ABS, ASA benefits from a warm chamber and slow first-layer speeds. ASA absorbs moisture slowly; dry it when prints start stringing or popping: 80°C for about 6 hours, and no hotter than 85°C.

When you are comparing ASA deals, the headline spool price is rarely the whole story. Reel weights vary between 500g, 800g and 1kg, and multipacks are often listed at a bundle price that looks expensive until you divide it out. Every card below shows the price per kilogram alongside the current price so you can compare like for like, and we flag listings that have recently dropped so you can tell a genuine discount from a permanently inflated "was" price.

Brands currently stocked in this category include iSANMATE, ERYONE, Polymaker, SUNLU, eSUN, ANYCUBIC. Prices between brands can differ by more than 50% for functionally similar filament, so it is worth checking a few before committing to a bulk order.