If you don't want to use a Weller solder gun, you can use conductive epoxy.
http://www.mgchemicals.com/products/8331.html
View attachment 408417
Silver Conductive Epoxy
8331
Forms high strength conductive bonds
This two part silver epoxy offers high electrical conductivity and strong conductive bonding. Use in place of traditional soldering on heat sensitive components. Good for repairing defective traces and creating jumpers on boards. Can be used as an effective heat sink adhesive. This Conductive Silver Epoxy comes in two 7g syringes.
Specifications
Specification Test Method Result
Minimum operating temp. -30°C ( -22 °F )
Maximum operating temp. 90°C ( 194°F )
Cure time @ 24°C (75°F) 4 hours
Cure time @ 65°C (150°F) 10 minutes
Working time @ 22°C 10 minutes
Volume resistivity @ 25°C MIL-STD-883E 0.38 ohm · cm
Tensile strength ASTM-D-638-02A 911 psi
Elongation ASTM-D-638-02A 0.3 %
Compressive Strength ASTM-D-695-02A 1100 psi
Flexural Strength ASTM-D-790-03 2,500 psi
Shear Strength ASTM-D-732-02 234 psi
Available Sizes
Catalog Number Sizes Available Description
8331-14G 14g (0.35 oz) Two 7g syringes, 3ml each
Mouser carries it:
http://www.mouser.com/search/ProductDetail.aspx?R=8331-14Gvirtualkey59020000virtualkey590-8331-14G
Product Information
Mouser Part #: 590-8331-14G
Manufacturer Part #: 8331-14G
Manufacturer: MG Chemicals
Description: Epoxy Compounds EPOXY - ELECTRICALLY SILVER CONDUCTIVE
Ordering Information
Stock: 2 Can Ship Immediately
On Order: ---
Pricing: 1: $19.95
Or, from Newark:
http://www.newark.com/jsp/search/productdetail.jsp?sku=00Z1602
Manufacturer: ITW CHEMTRONICS
Newark InOne Part Number: 00Z1602
Manufacturer Part No: CW2400
Description
Adhesive Compound
Leaded Process Compatible:Yes
Features:Conductive Silver Epoxy Provides Excellent Electrical Conductivity and High Thermal Conductivity, High Strength Bonding and Repairs ,Quick Solderless Electronic Connections Availability: 330
Price For: 1 Each
Price: $37.64