The CRUXWELD PulseGem 100 is a jewelry spot welding machine that makes tiny, argon-shielded pulse-arc welds with a fine tungsten electrode. Clip the piece, touch it to the tip and the pulse fires on contact.
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Closing a permanent bracelet on a customer’s wrist, re-joining a broken link or tacking a wire on an orthodontic appliance — these joints are millimetres across and sit next to stones, solder or skin. A flame heats too much. The PulseGem 100 does not.
It strikes a pulse of arc lasting 3 to 30 milliseconds from a sharpened tungsten electrode under argon, so the heat stays in a pinpoint. Set the power and time, or pick one of five programs, then touch the work to the tip.
Watch a jump ring close. The piece meets the tip; the pulse does the rest. Change the retract time to see how the electrode’s pause changes.
The retract time is selectable — 0.5, 1 or 1.5 s — to suit your hand speed.
This is the PulseGem 100 front panel. Tap a power step, a pulse time and a program to see what each control does to the current pulse.
Select
Power is set in 10 steps, each 10% of full power; pulse time runs from 3 to 30 ms. Start low and test on a similar piece first.
The power switch, the fused power inlet and the argon inlet sit on the rear panel. Hover or tap the numbers.
The argon line connects through the supplied pressure regulating valve and gauge.
1Power switchMain ON / OFF.2Power inlet with fuse110 V / 60 Hz or 220 V / 50 Hz; fuse 250 V / 2.0 A.3Argon inletConnect your argon cylinder here through the regulating valve.
A cracked gold band, joined with a single pulse and finished. Hover to pause the reveal.
BeforeAfter
Results vary with the metal and its thickness. Start with a low setting and test on similar material first.
Hover or tap the numbers on the photo; the list uses the same numbers.
1Welding unitPulseGem 100 with power and time displays and five programs.2Handle standBase, rods and screw; holds the welding handle.3Hexagon wrenchFor the stand.4Pressure regulating valveWith support; sets the argon pressure.5Needle burnisherRe-sharpens the tungsten needle.6Pressure gaugeShows the argon supply pressure.7Welding handleHolds the tungsten needle in a collet.8Tungsten needles & collets10 needles and 4 clip heads.9Power cordFor 110 V or 220 V supply.
See the full spot welder range.
| Parameter | PulseGem 100 |
|---|---|
| Power | |
| Model | PulseGem 100 |
| Process | Pulse arc spot welding, argon-shielded, tungsten electrode |
| Input voltage | 110 V / 60 Hz or 220 V / 50 Hz |
| Input power | 100 W |
| Fuse | 250 V / 2.0 A |
| Welding | |
| Welding voltage | 40 V |
| Welding current | 50 – 600 A |
| Welding time | 3 – 30 ms |
| Power setting | 1 – 10 (×10%) |
| Maximum welding frequency | 1 Hz |
| Working patterns | 5 presets: gold, Co-Cr alloy, mixed, pure titanium, orthodontic ties |
| Electrode retract (deflate) time | 0.5 / 1 / 1.5 s |
| Argon & electrode | |
| Argon supply pressure | ≥ 0.1 MPa |
| Maximum argon consumption | 5 L/min |
| Tungsten electrode stick-out | 10 – 15 mm |
| Electrode tip angle | 25° or less |
| Build | |
| Protection class | IP21 |
| Dimensions | 240 × 155 × 280 mm |
| Weight | 6.35 kg |
