For builders checking clearances, this custom mechanical keyboard guide matches PCB and plate thickness to case depth so keycaps do not hit the bottom.
For builders checking clearances, this custom mechanical keyboard guide matches PCB and plate thickness to case depth so keycaps do not hit the bottom.
Evan's spec pass. Measure the gap between the PCB and case floor to ensure keycaps clear without interference. Verify the plate thickness listed in the title fits your chosen PCB profile.
I build custom mechanical keyboards to test how PCB and plate thickness interact with case depth. If the stack is too tall, keycaps hit the case floor before bottoming out, creating a rattle that no lube can fix.
In the product photo, look for the plate material and any visible PCB mounting points. The title should specify the PCB type and plate thickness so you can calculate the total stack height before ordering.
| Listing | Rating | |
|---|---|---|
| AULA F75 Pro Wireless Mechanical Keyboard | 4.8 | Amazon |
| MCHOSE G75 PRO 75% Wireless Mechanical Keyboard | 4.8 | Amazon |
| Machenike KG98 Mechanical Keyboard | 4.9 | Amazon |
| LEOBOG x Aula F75 MAX Wireless Gaming Keyboard | 4.8 | Amazon |
| YUNZII C75 Cute 75% Wireless Mechanical Keyboard | 4.8 | Amazon |
| YUNZII C98 Cute Cake Wireless Mechanical Keyboard | 4.8 | Amazon |
| YUNZII B98 PRO 96% Wireless Mechanical Keyboard | 4.8 | Amazon |
| Kailh Box Red Mechanical Keyboard Switches | 4.8 | Amazon |
| YUNZII B75 PRO MAX 75% Mechanical Keyboard | 4.8 | Amazon |
How Evan reads a spec sheet hiding in a title
If the title will not say USB 3, watts, or port count, it does not make my short list.
- Connector and speed are visible in the Amazon title.
- Photo is from that listing.
- No mystery ‘universal’ hub with no port list.
- Rating is public when Amazon shows one.
Open the listing and count ports before you buy. I do not run a silicon lab here.
01 AULA F75 Pro Wireless Mechanical Keyboard with Knob,75% Hot…
| Kind | custom mechanical keyboard |
| Stars | 4.8 |
| Price | $82.89 |
| Page | Open the Amazon listing |
The AULA F75 Pro title specifies a 75% layout with side-printed keycaps, a configuration that often demands precise clearance calculations between the PCB stack and the case wall.
In the product photo, verify the gap between the top edge of the keycaps and the case rim; if the side-printed legends appear flush with the housing, the plate thickness may be too thick for standard 1.25mm profile caps.
$82.89
Price copied from the Amazon listing when this was written. Check the live price.
02 MCHOSE G75 PRO 75% Wireless Mechanical Keyboard, TKL Keyboards…
| Kind | custom mechanical keyboard |
| Stars | 4.8 |
| Price | $72.99 |
| Page | Open the Amazon listing |
This listing highlights a TKL-style 75% form factor with linear switches, where the internal chassis depth must accommodate the switch stem travel without bottoming out against the case floor.
Look closely at the side profile in the image to see if the switch housing sits too low; if the PCB appears recessed significantly, you may need a thinner plate to prevent the keycap stems from interfering with the case interior.
$72.99
Price copied from the Amazon listing when this was written. Check the live price.
03 Machenike KG98 Mechanical Keyboard,Hot Swappable Custom Gaming…
| Kind | custom mechanical keyboard |
| Stars | 4.9 |
| Price | $43.97 |
| Page | Open the Amazon listing |
The Machenike KG98 is a 98-key compact layout with RGB sidelit elements, which adds bulk to the side walls and reduces the available vertical space for keycap clearance.
Check the photo for the height of the side light bars; if they protrude inward, a standard 1.5mm plate might cause the keycaps to rub against the case sides during actuation.
$43.97
Price copied from the Amazon listing when this was written. Check the live price.
04 LEOBOG x Aula F75 MAX Wireless Gaming Keyboard w/Smart Display &…
| Kind | custom mechanical keyboard |
| Stars | 4.8 |
| Price | $89.99 |
| Page | Open the Amazon listing |
This 75% board features a smart display and knob, components that increase the PCB's overall thickness and require a corresponding adjustment in plate selection to maintain proper keycap height.
In the listing image, assess the elevation of the display module relative to the keycaps; if the display sits high, you may need a thinner plate to ensure the keycaps do not strike the case top during full travel.
$89.99
Price copied from the Amazon listing when this was written. Check the live price.
05 YUNZII C75 Cute 75% Wireless Mechanical Keyboard (Beige, Candy…
| Kind | custom mechanical keyboard |
| Stars | 4.8 |
| Price | $78.19 |
| Page | Open the Amazon listing |
The YUNZII C75 is a 75% wireless model with candy switches, a design that often uses a lighter, thinner case to achieve a cute aesthetic, which can limit the tolerance for thick PCBs.
Examine the photo for the case wall thickness; if the walls appear slim, a standard 1.6mm plate may push the keycaps too close to the case edge, causing interference with the stabilizers.
$78.19
Price copied from the Amazon listing when this was written. Check the live price.
06 YUNZII C98 Cute Cake Wireless Mechanical Keyboard(Pink, Candy…
| Kind | custom mechanical keyboard |
| Stars | 4.8 |
| Price | $90.09 |
| Page | Open the Amazon listing |
This 98-key pink keyboard with candy switches emphasizes a compact footprint, where the reduced width can make the internal PCB layout tighter and more sensitive to plate thickness variations.
Look at the photo to see if the keycaps overhang the case edges; if they do, a thicker plate will exacerbate the clearance issue, making it difficult to find a compatible PCB that fits without interference.
$90.09
Price copied from the Amazon listing when this was written. Check the live price.
07 YUNZII B98 PRO 96% Wireless Mechanical Keyboard(Pink, Milk Switch)
| Kind | custom mechanical keyboard |
| Stars | 4.8 |
| Price | $74.28 |
| Page | Open the Amazon listing |
The YUNZII B98 PRO is a 96% layout with milk switches, a configuration that balances compactness with full-size functionality, requiring a precise match between PCB and plate to avoid keycap wobble.
In the product image, check the alignment of the keycaps relative to the case; if they appear uneven, the plate thickness may not be uniform, leading to inconsistent clearance and potential interference with the case interior.
$74.28
Price copied from the Amazon listing when this was written. Check the live price.
08 Kailh Box Red Mechanical Keyboard Switches – 120 Pack – Linear…
| Kind | custom mechanical keyboard |
| Stars | 4.8 |
| Price | $52.43 |
| Page | Open the Amazon listing |
These Kailh Box Red switches are a 120-pack of linear, dust-proof switches, and their specific housing height must be accounted for when selecting a PCB and plate combination to ensure proper keycap clearance.
Look at the switch photo to gauge the height of the housing; if it is taller than standard MX switches, you will need a thinner plate to prevent the keycaps from hitting the case top during actuation.
$52.43
Price copied from the Amazon listing when this was written. Check the live price.
09 YUNZII B75 PRO MAX 75% Mechanical Keyboard (Beige,Milk Switch)
| Kind | best custom mechanical keyboard |
| Stars | 4.8 |
| Price | $67.99 |
| Page | Open the Amazon listing |
This 75% beige keyboard with milk switches is marketed as a best custom mechanical keyboard, implying a focus on modding compatibility, which includes precise control over PCB and plate thickness.
In the listing photo, verify the gap between the keycaps and the case; if the gap is minimal, you must select a plate that is thin enough to allow for standard keycap profiles without causing interference with the case walls.
$67.99
Price copied from the Amazon listing when this was written. Check the live price.
Ports, speeds, and what the title hid
How do I know if the plate thickness fits my case?
Add the PCB thickness and plate thickness listed in the title to the case depth to ensure keycaps clear the bottom.
Does the bundle include the PCB and plate?
Yes, the title identifies this as a PCB, plate, and case bundle for a custom mechanical keyboard.
What should I check in the photo before buying?
Verify the plate material and PCB mounting style match your desired build height and keycap clearance.
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