F.A.Q.
Lampert USA · Learning & Support
Your welding questions, answered.
Choose a subject below, then select a question to read the answer.
Features and settings vary by model. Follow the operating and safety instructions supplied with your equipment.
Welding basics How it works, power, pulse duration, and electrode angle
How does Lampert precision welding work?
A brief TIG arc from a tungsten electrode locally melts metal to create a weld.
How is welding different from soldering?
Welding fuses base metal; soldering joins parts using a lower-melting filler.
How do power and pulse duration affect the weld?
Power mainly affects spot width. Longer pulses generally increase penetration and heat.
Does electrode angle matter?
Yes. Perpendicular placement generally maximizes penetration; angled placement influences metal flow.
Materials & technique Metals, filler wire, gemstones, and silver welding
Which metals can be welded?
Many precious-metal, steel, and titanium alloys are weldable. Results depend on alloy composition.
Can different metals be joined?
Some combinations are compatible; others are not. Test the specific materials first.
Can I use solder as welding filler?
Normally use suitable welding wire. Solder additives can burn and contaminate welds.
Can I weld near gemstones?
Short pulses limit heat, but cannot guarantee protection against gemstone damage.
Where can I learn more about welding silver?
Visit the illustrated Welding Silver workshop within Learning & Support.
Argon & shielding gas Gas purity, cylinder life, flow adjustment, and ventilation
Which argon should I use?
Pure argon, grade 4.6 or better: at least 99.996% purity, without additives.
How long does an argon cylinder last?
Lampert estimates 6–12 months for a 10-liter cylinder in typical goldsmith use; consumption varies.
What gas flow should I use?
Follow your model’s manual. Lampert’s general FAQ lists 2–3 L/min, including older equipment.
How do I adjust the regulator?
Adjust while gas flows, using your model’s gas-test procedure.
Is argon toxic?
Argon is nonflammable and nontoxic. It can displace oxygen, so adequate ventilation is essential.
Where can I check my model’s gas requirements?
Select your model on the Operating Manuals page. Contact Lampert USA if you need help locating the appropriate instructions.