Just thought I would create a quick thread on this in case it is helpful for any others that may have picked up new Taito coin slots that don't have the threaded screw hole inserts added already.
Here's what they look like as received (not my pic):
The holes where the screws go are not wide enough, so they have to be drilled out a bit to fit a threaded insert.
I used a 5/32" drill bit to widen the holes, be very careful not to go too far or you will either create a bump on the top side or even a hole.
Once that's done you can use a soldering iron with heat-set insert tip (M3). I used the following:
ruthex 7x Soldering Tips/Heat-Set Insert Tips - for Thread Inserts M2 / M2.5 / M3 / M4 / M5 / M6 / M8 - #2-56 / #4-40 / #8-32/ #10-24 1/4" and Soldering Iron Adapter 900M / T18
https://www.amazon.com/dp/B0CDBSGSXY
An M3 threaded insert with length 4mm is a bit longer than the threaded inserts Taito used, but I didn't find any smaller ones and these worked for me:
ruthex M3 Threaded Inserts Short - 100 Pieces RX-M3Sx4.0 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components
https://www.amazon.com/dp/B09ZHSGHXD
Note the M3Sx4.0 as opposed to regular M3 which will be 6mm from the above vendor.
This is what it looks like with insert added next to the original gray coin slot:
When melting plastic you may want to use a smoke absorber and/or ensure you are properly ventilated/protected from any fumes. That said, I didn't notice any smoke and the inserts went in like butter.
Quick and easy project but thought the links and measurements may come in handy for others!
Here's what they look like as received (not my pic):
The holes where the screws go are not wide enough, so they have to be drilled out a bit to fit a threaded insert.
I used a 5/32" drill bit to widen the holes, be very careful not to go too far or you will either create a bump on the top side or even a hole.
Once that's done you can use a soldering iron with heat-set insert tip (M3). I used the following:
ruthex 7x Soldering Tips/Heat-Set Insert Tips - for Thread Inserts M2 / M2.5 / M3 / M4 / M5 / M6 / M8 - #2-56 / #4-40 / #8-32/ #10-24 1/4" and Soldering Iron Adapter 900M / T18
https://www.amazon.com/dp/B0CDBSGSXY
An M3 threaded insert with length 4mm is a bit longer than the threaded inserts Taito used, but I didn't find any smaller ones and these worked for me:
ruthex M3 Threaded Inserts Short - 100 Pieces RX-M3Sx4.0 Brass Heat Set Insert for Plastic Parts - Metric knurled Nuts - Insert by Heat into 3D Printing Components
https://www.amazon.com/dp/B09ZHSGHXD
Note the M3Sx4.0 as opposed to regular M3 which will be 6mm from the above vendor.
This is what it looks like with insert added next to the original gray coin slot:
When melting plastic you may want to use a smoke absorber and/or ensure you are properly ventilated/protected from any fumes. That said, I didn't notice any smoke and the inserts went in like butter.
Quick and easy project but thought the links and measurements may come in handy for others!
