The Siliworks X HMX Sonja HC and Durock Mocha Silk switches are both standard MX mechanical switches of the linear breed. They both feature POM stem material, standard stem shape, 2 mm pre-travel, however, they come with different top housing (modified PA66 (with texture for MORE scratchiness) vs POK), bottom housing (modified PA66 vs POK), spring (18 mm KOS single-stage extended vs 15 mm), actuation (52 g vs 48 g), bottom-out force (60 g vs 56 g), total travel (3.90 mm vs 3.80 mm). That said, they are not too similar. Let's check out this side-by-side specs rundawn with details, availability -- and even current prices -- to figure out which one fits you the best!
The Siliworks X HMX Sonja HC is a linear standard MX mechanical switch with modified PA66 (with texture for MORE scratchiness) top housing, modified PA66 bottom housing, and POM stem (standard shape). It features a 18 mm KOS single-stage extended spring. The 52g actuation occurs at 2mm. The 60g bottom-out occurs at 3.90mm. Factory lubing? Yes! Designed by Siliworks. Manufactured by HMX. | The Durock Mocha Silk is a linear standard MX mechanical switch with POK top housing, POK bottom housing, and POM stem (standard shape). It features a 15 mm spring. The 48g actuation occurs at 2mm. The 56g bottom-out occurs at 3.80mm. Extra: Light diffuser. Factory lubing? Yes! Manufactured by Durock. |
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| Name | Siliworks X HMX Sonja HC | Durock Mocha Silk |
|---|---|---|
| Type | linear | linear |
| Footprint | 5-pin | 5-pin |
| Top housing | modified PA66 (with texture for MORE scratchiness) | POK |
| Bottom housing | modified PA66 | POK |
| Stem material | POM | POM |
| Stem shape | standard | standard |
| Spring | 18 mm KOS single-stage extended | 15 mm |
| Actuation | 52 g | 48 g |
| Bottom-out | 60 g | 56 g |
| Pre-travel | 2 mm | 2 mm |
| Total travel | 3.90 mm | 3.80 mm |
| Lube | Factory lubing? Yes! Sonja HC switches are lubed using the same method as Snow Crash switches; only the leaves and springs are factory-lubed. Leaves are lubed with a thin coat of 205g0 and 105g0 mix, and springs are lubed with dry-film. The stem, bottom housing, and top housing are all dry. | Factory lubing? Yes! |
| Designer | Siliworks | - |
| Manufacturer | HMX | Durock |
By tracking prices and in-stock status of 30+ well-known keyboard stores worldwide, we can state that the Siliworks X HMX Sonja HC is much more widely available, but the Durock Mocha Silk is also available in some stores.
Clicking the links below take you to some notable keyboard shops offering Siliworks X HMX Sonja HC and Durock Mocha Silk switches. When accepted, the prices indicated already include the discount - use the KBDNEWS coupon code at checkout to claim your saving!
Prices, discounts, and stock status are checked regularly; however, changes since the last update cannot be ruled out. Everything here is for informational purposes only. Check the product pages for the latest prices!
Comments on Siliworks X HMX Sonja HC switches | Comments on Durock Mocha Silk switches |
The HMX Sonja HC switch, or you can call them the Sonja Hardcore version, comes with customized stem and housing for a nostalgic rail bottom-out and scratchy feeling. Consider these a more OG version of the Sonja switches. If you like Sonja but want something that's even scratchier with a heavier spring, Sonja HC is your go-to choice – Unikeys. | Full POK Housing for Smoother push feel. Optimized housing and Stem for Minimum Wobble. Thocky Sound performance with Special long Pole. Pantone 2025 Mocha Mousse Housing and Creamy Silk Stems. Improved factory lubing – beaverkeys. |
