Adhesives and Sealants — FAQ
What's the difference between thin, medium, and thick CA glue for woodworking?
Thin CA (watery) penetrates wood fibers fast, ideal for tight joints and finish sealing. Medium (syrup) balances penetration and gap-filling for general use. Thick/gel (paste) fills voids and stays put on vertical surfaces but cures slower. Most woodworkers need at least thin and medium on hand.
How do I prevent CA glue from drying out in the bottle?
Store upright in an airtight container with silica gel packets. Refrigerate unopened bottles; bring to room temp before use. Always replace the cap immediately after dispensing. Anti-clog caps help, but CA glue naturally absorbs atmospheric moisture—expect 6-12 month shelf life once opened.
Can I use CA glue for structural furniture joints?
CA glue excels at small joinery and tack-holding but lacks the flexibility and gap-filling capacity of PVA or epoxy for primary structural joints. Use CA for temporary alignment, reinforcing weak end grain, or bonding small components. For load-bearing joints, pair with traditional wood glue.
What's the best way to remove excess CA glue from wood surfaces?
Act fast—wipe wet glue with acetone on a clean cloth. For cured glue, carefully scrape with a sharp chisel or sand through the spot. Dark-tinted CA helps hide minor excess. Prevent squeeze-out by using less glue and masking adjacent areas with painter's tape before assembly.
How long does CA glue last on wood in real-world conditions?
Quality CA bonds remain strong for 5-10 years indoors. Outdoor exposure to UV and moisture degrades bonds in 1-3 years unless specifically rated waterproof. For cutting boards and kitchen items, avoid CA near food-contact surfaces—it's not FDA-approved food-safe.
Is CA glue safe to use on woodturning projects and bowls?
Yes, CA is standard for woodturning—use thin CA for finish sealing and medium for crack repair. Ensure full cure (24 hours) before food contact, though it's not certified food-safe. For salad bowls, apply CA only to exterior or decorative elements, not interior food surfaces.
