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Re: KF 700 SP options

 

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Hi Corey,

The big tenon cutters are part of a Leitz Euro window set. ?

The max depth of tenon is about 90mm. ?Since the big tenon cutters are part of a window set and are made to make crossed lapped tenons the cutters have a corresponding mate that makes a joint that is a specific width. ?The standard finished stile and rail width for this set is 78mm so the tenon and its cross lapped mate have to account for this length. ?For doors I can make the stiles and rails up to 90mm wide. ?Then I hit the limit of tenon depth as the cutters are mounted on 80 mm sleeves.

If I want to go wider for a tall bottom rail then I mill off the tenons on the rail and use dowels.

So what is your reference for all glue failing on cross grain surfaces? ?Over what time period?

While at the Thonet furniture factory in Germany last May I saw Windows used in their museum made with cross lapped tenons and there was no evidence that the corner glue joints were failing. ?I am guessing that the windows were 20 to 30 years old. ?I noticed these windows because they had a 4mm air gap and were 58mm thick. ?This is similar to the euro windows I make. ?Europe has moved on to thicker more energy efficient windows so 58mm windows are now obsolete. ?I think they still work well for New Orleans climate though. ?


Joe in New Orleans



On Jan 12, 2018, at 3:01 AM, correy@... [felder-woodworking] <felder-woodworking@...> wrote:

HI Joe, what 300mm tenon cutter did you purchase? Max length of tenon? Cost?

I've been looking for similar for big door tenons and smaller timber work like gate projects. 5" tenon would even be more useful/
Ideally I would want the ability to cut twin tenons with spacers.? I hope the large set would be equally useful on shorter tenons for cabinet door size work. I do alot of twin tenons as it locates the rails to the stiles veryy squarely and solidly ( is that a word??) Also when the glue fails ( glue fails?always?over time on cross grain faces) the twin tenons will hold the form twice as well as a single tenon.
Unsure if you anyone is interested in twin tenons, but Nakahashi sells a twin mortise chuck for chisel mortices that allow you to cut two side by side mortices at once. Meant for smaller work, couple configurations but 6mm tenons spaced 6mm apart is an option with two other choices with minor variances.


My thought on the length of rip fence is mostly regarding my use of solid wood more than ply. I only buy a couple sheets a year for jigs and such.? ?So the wider rip capacity I feel is more convenient for solid work that may may be over 8'.? I think my fence( not felder) is 54"? I just feel the wider rip lets you cut longer pieces in half with out flipping the board around so much.

?another thought on having a slider for the OP is that I don't really like having to rip cut many sticks at at time on it. Few rip cuts here and there fine but kept my old unisaw for a dedicated rip saw for? stripping boards. I ! actually cut the fence down to 12" hug it up to the back of the shaper and share the feeder from the shaper with it. Only three horse, have been gagging with fast feeds for a some time and it still won't die. Miles of molding blanks and sticker for drying lumber sometimes at speeds as much as 60+ fpm.? I also worried that the sliding table is aluminum and dont want to where the edge from long runs of production ripping. Just thoughts. Sorry they are so random....
?Happy new year! Best to you all great conversation love reading your posts thankyou
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