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BG111737201 30/10/2021
13
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BG111737201 thank you

BG111737201 30/10/2021
13
Comments (6)

BG111737201 Irecently received mine and is also not square. I wonder how they mark them as accurate according DIN875/0.

BG891416541 28/12/2021
1
Comments (1)

BG111737201@JunhanYu ifthe headpiece doesn't sit inside the channels it will never be in the same place in relation to the tracks. So the dimension markers are no longer true and certsinly no guarantee on perpendicularity. the problem is not the groove on the headpiece but the bowing of the track in the sectional plane as it brings the channels closer. In theory one can force tightening the screws on the headpiece but could shear the thread which will render the whole bit useless. Banggood asked me to consider a full refund but I need to confirm the potential cost for return to China from England. It would be much better for them to arrange a collection as it is likely they have a courrier business rate account. I'd much prefer for Banggood to send a pair of track segments as replacement.

BG111737201 17/12/2021
1
Comments (7)