In a previous post I described how to align holes without measuring. My original alignment tool was laser cut, but due to lockdown I’ve had to devise a simpler way to acheive the same accuracy using readily available materials – this time I use BluTac and an old milk carton.
- My ‘hole’ list of videos –
- This post: 2 x jack socket holes, using BluTac and a milk carton (4:35)
- Oval USB-micro hole, using credit card and acrylic strip (2:40)
- Pin-hole for a recessed button, using only BluTac (2:28)
- Pin-hole for SMD LED, using only BluTac (1:18)













Yes it’s just that simple. This method worked first time for me. If you are unsure, drill the -holes a bit smaller and file them out to be in the correct place. A 4 minute video of this process is here.
Check out my videos for accurately marking other types of hole without measuring –
USB-micro oval cut-out (as described in a previous post here)
Pin-hole (ideal for a recessed reset button)
Pinhole on the lid to show the recessed LED of Wemos D1-mini
Very clever.
Clever indeed