Rob Keeble
Member
- Messages
- 12,633
- Location
- GTA Ontario Canada
Dave Black in his jointer post got into the issue of flatness on the table and fence of his new jointer.
I am in agreement with Dave on his desires, but i would still like to know where does one find the specifications for flatness for these surfaces.
Is there a general industry specification for ground cast iron surfaces like a table saw top or a jointer bed etc. Something that produces a general norm.
I am guessing there has to be something like this in order for a manufacturer to work to a specific flatness tolerance and then another for the go no go acceptance of the product even in batch form at the factory by a vendor such as say Grizzly.
Seems to me without this flatness spec its arbitrary as to whether one has claim on a vendor when one considers the flatness of a particular surface to be out.
Then there is the issue of what to expect for the kind of money we spend for the machine we get. I mean this has been pointed out before that we kinda get a whole lot of machine for very little money if one is realistic about it. But a whole lot of machine is pointless if it cannot do what its intended to do.
So how would a person in either Dave or Grizzlys shoes arbitrate this flatness thing. I am not specifically considering Daves situation which also has unique specifics related to it for his specific intentions of use.
We all get the support when we buy a new machine that says "check it out" or set it up. But check it out to what? I have a straight edge and feeler gauges but that means nothing without a spec. Even the weighs and measures guys have specs for what a standard pound/ kilogram etc are.
Does anyone have any knowledge on this matter that they would care to share to help shed some light on the matter?
I am in agreement with Dave on his desires, but i would still like to know where does one find the specifications for flatness for these surfaces.
Is there a general industry specification for ground cast iron surfaces like a table saw top or a jointer bed etc. Something that produces a general norm.
I am guessing there has to be something like this in order for a manufacturer to work to a specific flatness tolerance and then another for the go no go acceptance of the product even in batch form at the factory by a vendor such as say Grizzly.
Seems to me without this flatness spec its arbitrary as to whether one has claim on a vendor when one considers the flatness of a particular surface to be out.
Then there is the issue of what to expect for the kind of money we spend for the machine we get. I mean this has been pointed out before that we kinda get a whole lot of machine for very little money if one is realistic about it. But a whole lot of machine is pointless if it cannot do what its intended to do.
So how would a person in either Dave or Grizzlys shoes arbitrate this flatness thing. I am not specifically considering Daves situation which also has unique specifics related to it for his specific intentions of use.
We all get the support when we buy a new machine that says "check it out" or set it up. But check it out to what? I have a straight edge and feeler gauges but that means nothing without a spec. Even the weighs and measures guys have specs for what a standard pound/ kilogram etc are.
Does anyone have any knowledge on this matter that they would care to share to help shed some light on the matter?