Choosing between these two 3D printing maker hardware upgrades comes down to whether you need to see the print better or hold the frame together better. Both fall within a few dollars of each other on listed price, but they solve completely different problems in the workshop.
Quick verdict
If you're struggling to watch first layers, nozzle movement, and layer changes in dim conditions, the LED Light Kit for Sparkx i7 is the more direct upgrade. If you're dealing with loose extrusion mounting plates or clamp plate displacement, the 10Pcs Silver Metal M3 Rectangular Washer Fastening Plates gives you a mechanical fix at a lower listed price.
Price and feature comparison
| Feature | LED Light Kit for Sparkx i7 | 10Pcs Silver Metal M3 Washer Plates |
|---|---|---|
| Listed price | USD 19.43 | USD 15.63 |
| Primary purpose | Print viewing and nozzle checks | Fastening plates for mounting connections |
| Material / build | LED lighting, wiring leads, connector modules | Silver metal, M3 rectangular washers |
| Dimensions | Not specified | 1.5cm length, 0.5cm width, 0.20in height |
The LED kit is positioned as a model-specific fit for Sparkx printers. The washer plates come as a 10-piece set. Both are listed as new and originate from China.
Where the LED Light Kit wins
The LED Light Kit is the pick when your bottleneck is visibility. The bright LED lighting is designed to direct clearer light across the active print area, which makes it easier to watch first layer adhesion, layer changes, and routine progress. It's also built with USB-connected hardware, so the package includes lighting, wiring leads, and connector modules rather than just the light itself. For Sparkx i7 users, the model-specific fit means you're adding a targeted accessory instead of adapting a generic light.
Where the washer plates win
The 10Pcs Silver Metal M3 Rectangular Washer Fastening Plates win on mechanical stability and listed price. The metal M3 washers help reinforce extrusion mounting plate connections and can block clamp plate displacement, which addresses assembly interruptions that can affect print quality. The set also gives you 10 pieces for multiple fastening points.
LED Light Kit for Sparkx i7 3D Printer

This is the upgrade to choose when your priority is watching the print happen. The LED lighting helps illuminate the active print area, which makes it easier to spot first layer issues, monitor layer changes, and check nozzle movement without craning your neck or relying on overhead room light. The kit is described as a model-specific fit for Sparkx printers, and the USB-connected layout means the package contains the wiring leads and connector modules you need to get the task light running. The trade-off is the higher listed price in this pairing, and it doesn't do anything for mechanical looseness. If you're printing in a dim workspace or want better visibility for calibration, this is the option to consider.
10Pcs Silver Metal M3 Rectangular Washer Fastening Plates

If loose mounting connections are what's hurting your print quality, these metal M3 washers go after the cause. They're designed to reinforce extrusion mounting plate connections and cut down clamp plate displacement, which can otherwise interrupt assembly and affect layer quality. The hardware is silver-finished metal, and the set includes 10 pieces, so you can keep spares on hand for multiple connection points. The compact dimensions fit tight fastening jobs. The limitation is that they don't help with visibility at all-if you're struggling to see the nozzle or print bed, you'll still need a light. But at a lower listed price than the LED kit, they're the economical choice for mechanical stability.
Final choice by use case
Pick the LED Light Kit for Sparkx i7 (USD 19.43) if you want clearer print viewing and nozzle checks, especially in dim work areas. Pick the 10Pcs Silver Metal M3 Rectangular Washer Fastening Plates (USD 15.63) if you need to stabilize extrusion mounting plate connections and keep clamp plates from drifting. Both are practical 3D printing maker hardware upgrades; the right one depends on whether your next print is failing from poor visibility or from loose parts.