now having two pieces of 3m rack i needed to attach it to the y axis angle iron i used 4mm counter sunk brass machine screws..iv used these as it was 10pm and thats all i had in the shed.....Click image for larger version. 

Name:	IMAG0200.jpg 
Views:	622 
Size:	155.2 KB 
ID:	19660Click image for larger version. 

Name:	IMAG0201.jpg 
Views:	626 
Size:	285.7 KB 
ID:	19661