Well here goes... Aluminium frame router design

[Lee Roberts]

Hi Lee,

so I checked the serial numbers again, both are DFH20A but the nice fitting ones have S01411040 and the tight one has S01207841. Does anyone know if any of these numbers signify the preload, I'm thinking I may have a higher preload carriage or is it just a batch number and one was made at a different time with not such a good QC?

Cant help there sorry, what you could do is mic the ball's and see if they are diffrent, this may give you the anwser.

More Importantly, will it affect the build having a mis matched carriage?

I can’t see it being a problem, so would just go with it, others may know better but I can’t think what problems it may introduce, ultimately if it is a preload difference then its unbalanced but would suggest it’s going to be such a small amount, just leaving you with the least amount of preload as your best number, so again not a problem.

.Me