Does anyone know what size the thread is for the knife adjustment screws on the cutter block? It's the small grub screws situated under the knife. The machine itself is an MB with the 2 knife block.
Thanks.
Thanks.
Sedgwick planer - knife adjustment grub screw
- Thread starter EBH1
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Myfordman
AKA 9Fingers
What is the size of the correctly fitting Allen key?
Hi Myfordman,
The grub screws have a 4mm allen key head. The machine itself is one of the two tone green versions with the 1500mm beds. The grub screws are pretty badly shot and the threads on the cutter block could do with recutting. Hopefully the grub screws are the correct size as they seem quite tight when winding them right down.
Cheers,
Euan
The grub screws have a 4mm allen key head. The machine itself is one of the two tone green versions with the 1500mm beds. The grub screws are pretty badly shot and the threads on the cutter block could do with recutting. Hopefully the grub screws are the correct size as they seem quite tight when winding them right down.
Cheers,
Euan
Myfordman
AKA 9Fingers
4mm is almost identical to 5/32" so that is the one size that does not help identify metric or imperial threads.
If it is metric, the screws will be M8 thread so try the fit with an M8 bolt - don't force it, if the thread is right it will only need light spanner.
the thread pitch is 1.25mm (20.3 threads per inch
The other possibilities are 5/16" whit worth or 5/16" BSF - it is very unlikely to have American threads UNF/UNC
5/16" whitworth is 18 threads per inch and 5/16" BSF is 22 threads per inch
So with a bit of measurement, you should be able to work out what you have. With that difference in pitches, they will either fit or not.
hth
MM
If it is metric, the screws will be M8 thread so try the fit with an M8 bolt - don't force it, if the thread is right it will only need light spanner.
the thread pitch is 1.25mm (20.3 threads per inch
The other possibilities are 5/16" whit worth or 5/16" BSF - it is very unlikely to have American threads UNF/UNC
5/16" whitworth is 18 threads per inch and 5/16" BSF is 22 threads per inch
So with a bit of measurement, you should be able to work out what you have. With that difference in pitches, they will either fit or not.
hth
MM
Why not contact Sedgwick in Leeds? They should know exactly what is needed and supply it.
Jim
Jim
Myfordman
AKA 9Fingers
Harbo":3771k547 said:
I often use Falcon workshop supplies - ebay vendor massiveattack007 feedback is around 300000 so he must be doing something right.
I mainly use black HT screws and bolts from them and not had any rubbish over several years.
usual disclaimer....
MM
