posted January 13, 2012 | Views: 2811
There are numerous fabrication techniques for Seam-It® surfacing adhesives. With each technique there are certain criteria that must be met before optimimum finishing can be achieved.
Whether you are an experienced solid surface fabricator or new to the industry, these techniques can be helpful in eliminating some of the most common challenges faced when fabricating countertops. Give us a call anytime if you want to discuss any of these recomendations- we are here to help.
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- Seams should fit tightly when dry fitted
- Place a release material (clear packing tape) under the seam to prevent contamination of deck seam.
- Thoroughly clean areas to be seamed with denatured alcohol using a clean white shop rag.
- Position sheets to be seamed 3/16″ to 1/4″ apart
- Prepare clamping materials (attach glue blocks if using this technique)
- Prepare seam kits-Purge cartridge before installation of mixer tip then attach the mixer tip and purge to ensure proper mixture of glue.
- Fill the seam to 1/2 full.
- Slide the sheets together making sure there is glue squeeze out along entire seam.
- Clamp the seam together, but DO NOT OVERTIGHTEN clamps. Over tightening will cause starved, weak seams.
- Remove cured glue squeeze out with router on “skis”, surface leveler, or random orbital sander. Do not scrape, chisel, or use belt sander on seam.
- Sand backside of areas to be seamed.
- Dry fit edge strips and fasten hot melt blocks.
- Clean surfaces to be seamed thoroughly with denatured alcohol and a clean white shop rag.
- Purge cartridge and tip to ensure proper mixture of glue
- Apply glue and clamp with spring clamps at 2″-3″ intervals.
- Make sure there is adequate glue squeeze out along entire seam. Check carefully for voids.
- Do not sandwich other materials (wood, metal, laminate, etc.) between edges. Use these types of inlays in a routed groove.
- Once seam is cured, it is ready for routing.
Mitre Fold Drop Edges
- Place sheet material face down on a solid, flat work surface.
- Clean mitre.
- Apply a 1/16″ bead of glue in the entire length of the mitre fold seam.
- Apply a 1/16″ bead at one corner to be folded
- Fold up drop edge and clamp into place. Clamps should be within 2″ from each corner and located ever 12″. Place clamps 1/4″ above the face of the panel to ensure proper pressure.
- Note: Once drop edge is folded into place, do not allow the edge to separate from the deck.
- Fold up the end caps and secure in place with spring clamps or 3 way clamps. Clamps should be placed every 2″. Place 3 way clamps 1/4″ above the face of the panel.
- Glue squeeze out is required along the entire length of seam and at all corners.
- Allow seam glue to cure completely before machining.
Sink Fabrication Techniques
- Scuff area to receive sink using 80 micron or equivalent abrasive.
- Place wooden blocks with hot melt glue to position sink securely during glue up.
- Thoroughly clean areas to be seamed with denatured alcohol using clean white shop rags.
- Apply ample amount of Seam-It® surfacing glue to sink rim.
- Clamp sinks in place.
- Check for seam kit squeeze out around entire sink area.
- Remove clamps after seam glue hardens.
Thermo-Forming and Seam-it®
- All seaming must be completed after the Thermo-Forming process.