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How to connect a 400-800 Morticing unit to a Felder BF6-31


 

Dear Felder friends,
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I have managed to get hold of nearly all the missing parts from Felder to revive the old 400-800 morticing unit and attach it to my beloved BF6-31, but it seems they no longer stock one critical part, the rods that lock the morticer to the unit (part 71 on the attached numbered parts diagram for the series 7 machine, but same parts), and they are unable (or unwilling) to send me drawings or dimensions of these parts. I wonder if any of you have these locking rods connected to the locking handles, and whether you would be so kind as to take some photos and possibly measure some of the critical dimensions so that I can see if I can have them made at a local machine shop.
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Another mystery I have not solved is that the stand (75) appears to be too tall to slide under the morticing unit when mounted, and hence is not helpful in moving it into place to attach to the machine. When next to the machine the rod 66 is supposed to line up with the upper hole in the morticer 4, but the stand 75 is higher than the rod and hence I cannot slide it into place no matter how I raise or lower the morticer relative to the stand. If anybody has any ideas I would be most grateful.?
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Please note that the diagram they have sent me is for connecting to a series 7 machine, I attach the diagram for the series 6 machine but the individual parts are not all labelled on it so it is harder to explain the issues.
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Thank you so much for your help!
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Davide


 

Hi Davide,
? You can adjust the height of the mortiser on the stand with a bolt that goes through a slot in the back of the stand (see photo)
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Here are some photos of part 71 with the lever attached. There is a cam at the end and two rounded slots that a spring loaded ball bearing fit into to hold the lever in the up position while the mortiser is slid into place.?
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Hope This Helps,
Craig


 

Thank you Craig that's brilliant, I really appreciate you taking the time to measure everything.
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As for the height, I realise it can be adjusted, but the problem I have is that the top of the stand is actually too high - so that if the morticer is at the correct height to slot in, then the hole is obscured by the top of the stand! I am thinking of cutting off the top 1-2cm of the stand, this will open the slot unfortunately but I suspect it will still be stiff enough to hold.
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Thanks again
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Davide


 

Ahh, now I understand. I have a CF-731 and the location of the bolt in the slot is the perfect height.?
Craig


 


I have a BF631 and bought my Mortiser and cart right from Felder in about 2014. Everything went together. I can take pictures and or measurements of anything you need.

Kind regards,

Brian D. Milidrag
Cell?248.765.8411


On Sat, Mar 22, 2025 at 2:41?PM Craig Bayer via <cbayer57=[email protected]> wrote:
Hi Davide,
? You can adjust the height of the mortiser on the stand with a bolt that goes through a slot in the back of the stand (see photo)
?
?
Here are some photos of part 71 with the lever attached. There is a cam at the end and two rounded slots that a spring loaded ball bearing fit into to hold the lever in the up position while the mortiser is slid into place.?
?
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Hope This Helps,
Craig


 

I have a pair.? You can have them for the postage.
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Thank you to Jonathan for the kind offer, I'll message you privately to organise. Thank you also to Brian and to Craig for all your help!
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Davide