Custom heat sink holder for Raspberry RPI Pi 3B / 3B+ (with pins for diy or recycled heat sink)

Custom heat sink holder for
1) For Raspberry RPI Pi 3B or Pi 3B+
2) Holder is fixed on screws on RPI holes and fixing the heat sing with pins
3) Useful for diy or recycled heat sink applications
4) As a pins (diam. 2.5~3mm) can be used for example wooden pins or solid wire like for coils (coil wires are enameled so are not conductive on surface)
5) If heat sing is having very thick basement or thick heat-pad then might be necessary to use washers under the holders for lifting them up.

Uploaded are two versions:
a) Version horizontal - holder is on GPIO and HDMI sites. This version has been printed out and shown on pictures. This version is suitable for RPI 3B and 3B+ and NOT suitable for any newer RPI versions like 4/5. GPIO site holder is very close to 2pin header for resetting RPI - might be necessary to grind in this place manually;
b) Vertical version - holder is on USB and microSD card sites. This version has not been printed out and is not shown on pictures. This version is suitable for RPI 3B and 3B+ and is NOT suitable for any newer RPI versions like 4/5
c) Vertical version for RPI4 - holder is on microSD card site (the same as for RPI 3B) with dedicated for RPI4 holder on USB site, it might be OK for RPI 4 (however it was not verified).

On pictures is shown RPI 3B with black heat sink and RPI 3B+ with silver heat sink.