Step 4 Router and Brass

[Leadhead]

It is a small Step 4 540 Basic. Do you want further info? I have first part of Kress bracket. Need to make an adapter plate to complete.

[Trispectiv]

Well, according to the photo I found after searching the name of the router, the manufacturer shows it with a Kress mounted on it already. So I expect it should handle the weight of the Kress just fine.
(en.step-four.at/hp2/index.php?action=1482)

[Leadhead]

Aha! I have never noticed that! I even have that sheet pinned on the workshop wall! So need no more reassurance. Thank you!

Mine is an older machine and was fitted with the small Proxxon as standard. I bought this machine a while back and have not given it much attention until now.

[Trispectiv]

For the current version on their website, I see no spec about the stepper motors. They are also covered by a case, so I can't roughly estimate their capabilities upon their size either. However, it doesn't take a lot of torque to move the Kress around, I would rather worry about the deflection of the 16mm hanged rods instead. Since you already have Kress mount in production, the only way is forward :)

[Leadhead]

Hello again - Here is photo of the units. As you will observe. I doubt if this size Kress was ever standard on this machine.
But I stand to be informed

[Trispectiv]

Well, your router looks different from what they show on their website at this moment. If those are 10mm smooth rods, there will be quite a lot of flex. Also, Nema17 in the 0.3Nm range I suppose, will have a hard time pushing it around. But like I said, since you are half-way through already, you will have to mount it even just to check how well/bad your axes coop with the Kress weight.

[Leadhead]

The rods are 12mm dia. I have lightly clamped the Kress to the head and it runs around nice and smoothly. I checked the central deflection on the rods and there is a "no cutting load" movement of 0,03 mm. For what I am doing I think it may stand a chance of being OK.
Will post again once cutting is possible.