3 inch frame 
M2 20x20 stack
removable arms, 3mm thick and chamfered for 11xx motors .

https://www.thingiverse.com/thing:2891116
https://www.thingiverse.com/thing:2889508

3 inch frame 
M2 20x20 stack
removable arms, 3 mm thick chamfered for 13xx/14xx motors 
15gr of carbon
https://www.thingiverse.com/thing:2891116
https://www.thingiverse.com/thing:2889508

Pure X , double middle plate, removable arms of 3 mm chamfered
2mm top plate 
20x20 stack
11xx motors

80 gr RTF without lipo
https://www.thingiverse.com/thing:2891116

Removable arms ,
middle plate 3mm thick 
arms 3mm thick 11xx motors chamfered
20x20 m2 stack 
85 gr RTF without lipo .
Suitable for this canopy https://www.thingiverse.com/thing:2875278

Pure X , removable arms, can fit 13xx/14xx motors
20x20 or 30x30 fc layout ( 20x20 recommended)
80 gr  RTF .
https://www.thingiverse.com/thing:2891116

 

Removable arms ,
middle plate 3mm thick 
arms 3mm thick for 14xx motors, chamfered
20x20 m2 stack 
85 gr RTF without lipo .
suitable with with canopy https://www.thingiverse.com/thing:2875278
 

X streched 210 
4 x removable arms of 4 mm thick
2 x middle plate of 2 mm thick (one lower and one upper plate, there are 2 models for the middle plate)
top plate 2mm thick with its reinforcement of 2mm thick

Weight of the frame with all screws and nuts : nearly 60 gr 

X streched 210 
4 x removable arms of 5 mm thick
2 x middle plate of 2 mm thick (one lower and one upper plate, there are 2 models for the middle plate)
top plate 2mm thick with its reinforcement of 2mm thick
1  front reinforcement bar for the arms of 3mm thick

Weight of the frame with all screws and nuts : 65gr 
 

30x30 and 20x20 fc
X stretch 210 
https://www.thingiverse.com/leseb35/collections/jeremfpv
65 gr assembled 

30x30 and 20x20 fc
X stretch 210 
https://www.thingiverse.com/leseb35/collections/jeremfpv
65 gr assembled (without cross-bar)