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Rip fence alignment


 

Hello everyone,
I recently received the k945s and slowly getting to know the machine. I had a felder engineer set up the machine and supposedly tested everything, however I'm having difficulties with my rip fence. When the fence is in normal upright position, I have a huge deflection, around 2.5mm in the length of the fence. I tried to make some adjustments with adjusting the steel bar the fence is rolling on, however there was still some misalignment. Today I flipped the fence to the low position and viola, there is only 0,03 mm difference on the entire length of the fence. Any idea what could be causing this? Its the manual fence version with the aluminum extruded fence (. Did anyone else experienced this on other machines or any suggestions if this is possible to be resolved? I definitely dont overtighten the fence locking screw, only finger tight. Many thanks, R


 

Put a precision straight edge (good straight level will work) on the face of the extrusion, unclamped and clamped and make sure you are not bowing it. If it's not straight unclamped, then you need a new fence extrusion. If it's straight unclamped and only bowed after you clamp it, there are adjustment screws behind the fence to adjust it for vertical square and twist.

Brian Lamb
blamb11@...
lambtoolworks.com


On Friday, May 31, 2024 at 02:03:24 PM MST, richard.csizmazia@... <richard.csizmazia@...> wrote:


Hello everyone,
I recently received the k945s and slowly getting to know the machine. I had a felder engineer set up the machine and supposedly tested everything, however I'm having difficulties with my rip fence. When the fence is in normal upright position, I have a huge deflection, around 2.5mm in the length of the fence. I tried to make some adjustments with adjusting the steel bar the fence is rolling on, however there was still some misalignment. Today I flipped the fence to the low position and viola, there is only 0,03 mm difference on the entire length of the fence. Any idea what could be causing this? Its the manual fence version with the aluminum extruded fence (. Did anyone else experienced this on other machines or any suggestions if this is possible to be resolved? I definitely dont overtighten the fence locking screw, only finger tight. Many thanks, R


 

Mine is a banana on my k945s. Gave up on getting them to replace it, slide it back and forth to find a sweet spot and mark it


 

Hey Brian,
thanks a lot for your response. Its fairly straight without clamping. Do you have any guidance on how to make these adjustments? I have tried to adjust the aluminium bar and also the 90 degree screws to get the fence aligned but its not getting much better, the best i could get is around 0.5 mm deviation during its length, however I cannot seem to get out the bow / distortion even if i adjust the fence locking screws. The manual contains 0 info on this...
Many thanks,
Rich


 
Edited

Rich,

The two screws on the casting are to be used to set the rip fence square with the cast iron top, not to set it parallel to the blade. There should be a toe out of 0.002 to 0.004¡± set away from the blade measured along the length of the blade. If you checked that the fence is straight when unclamped and it bows when you clamp it, most likely you are clamping too hard. You only need a slight twist of the handle and the fence is locked in position.?

Since in the low position the fence moves away from the blade 0.03mm than your toe out is set correctly and there is nothing to adjust, just use light touch when clamping the fence in the vertical position.?

To adjust for proper toe out you change the position of the round bar that the rip fence rides on. You have 3 point of attachment. To adjust the toe out you loosen completely the nuts that secure the round bar to the extension table (far right), make sure to loosen them on both sides of the extension. Once that is done the only bolt you have to mess with is the middle bolt (don¡¯t do anything to the one closest to the slider). By loosening the nut on the inside of the cast iron top and tightening the one on the opposite side you increase the toe out and vice versa, by loosening the nut closer to the bar and tightening the one on the other end, you make the toe out smaller. One you have it set you tighten both nuts evenly, so you do not change the toe out, measure it again once the nuts are wrench tight and if everything is fine hand tighten the remaining two nuts (that secure the bar to the extension table). Tighten these nuts evenly on both sides by hand and once they no longer move tighten them evenly on both sides with the wrench. Make sure you do it evenly otherwise you will bend the bar.?

Mariusz


 

Hi Richard,

Best to post some photos of the fence without the extrusion on it, Felder has changed parts over the years and that way we can make accurate suggestions.?

Brian Lamb
blamb11@...
lambtoolworks.com


On Thursday, June 6, 2024 at 04:27:34 AM MST, richard.csizmazia@... <richard.csizmazia@...> wrote:


Hey Brian,
thanks a lot for your response. Its fairly straight without clamping. Do you have any guidance on how to make these adjustments? I have tried to adjust the aluminium bar and also the 90 degree screws to get the fence aligned but its not getting much better, the best i could get is around 0.5 mm deviation during its length, however I cannot seem to get out the bow / distortion even if i adjust the fence locking screws. The manual contains 0 info on this...
Many thanks,
Rich


 

Thanks a lot Mariusz, I was doing the right thing then. I will give it another go and send pictures. Thank you for your explanation!