dodgy bevelled corners

[muffinski]

IMAG0393.jpg

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Any thoughts on what is likely to be causing the corner to go inwwards as shown in the photos, I have changed the slip sheet.

[prospero]

Looks like it's doing it at the start of the cut. Could be that you are twisting the cutter block when plunging the blade. So it's starting in the wrong track and when you pull towards you it self-rights to produce that effect.

What mountcutter are you using? The block may be a tad slack and most cutters have an adjustment somewhere to compensate for worn bearings.

Also, check the blade is good and sharp and it's set at the right depth. It should just lightly score the slipsheet, no more.

[muffinski]

Hello Prospero using a fletcher 2100, I do try and change the blade often, not sure how the cutter block can twist as it only goes down and then is pulled towards me. Have checked the blade depth which seems a tad too deep.

[prospero]

It's a not uncommon problem. 'Hooking' is the word.

It could be all in the wrist action. When you take hold of the block there might be a tiny bit of play in it. It shouldn't be too tight at any rate.... But if you grab it too hard there is a tendency to twist it. You won't notice you are doing it, but it does matter.
You should just rest your hand on top, push the blade down and pull smoothly toward you keeping your forearm in line with the bar all the time.

[An Old Master]

Have a word with Roy Rowlands GCF, he's an expert on Fletcher cutters and will know exactly what the problem is. Contact him through Lion.

[Not your average framer]

Is the mountcutter, standing on a dead flat surface with no twisting from one end to the other? This can also lead hooking problems!

[muffinski]

Hooking indeed, your further discription was pretty saucy accoring to my wife . I think your points are vaild. I am using the guide on the side of the blade holder rather than the stops due to how things are marked up on the back of the mount board. At times I am using the mount cutter from the side rather than from the bottom in order to see the side marks, my bench may be a tad high, so this means I am not pulling towards me but to the side of me at times. There is a very slight play sith the cutter head on the rail, but I pressume this is normal to allow it to run up and down on the rail. I believe the the work bench I recently made to be flat and even. I will try and speak with Roy if I cannot resolve this problem over the weekend.

Thank you all for you helpful respsonses.

[prospero]

If it's any consolation, I've seen a lot worse hooking than that.

[IFGL]

I did at the spring fair, some awful mounts, some pretty good ones too.