Post by bicycleclip on Mar 2, 2018 5:45:24 GMT -5
I spoke with Alan at Wealden regarding the adjustable cutter. He got back to me very promptly, very nice chap to talk with. He outlined a couple of issues and a some possible solutions.
Given that inner spacing shims that would have to be re-manufactured to go inside the cutter case, he said that the tooling cost (NB: they are punched out of steel) would be too high to produce just a handful.
Using a 30mm to 20mm 'top hat' reducing bush may work - but the height of it needs to be determined by how the cutter is packed. You'll already know that the MF-VN 25 requires you to install unused shims on the outside of the adjustable cutter to secure the cutter on the spindle. I'll need to check the required width. He suggested that a local engineering shop would be able to produce some of these.
Another option he said may be worth considering is to ask USA manufacturers. He said that 3/4" (19.05mm) cutter heads are fairly common there, and that it wouldn't be too big a task to machine these up to 20mm. The point being made here is that it's technically easier to *increase* the bore size than it is to *reduce* it. You might simply clamp them and re-bore them to an increase of 1mm.
I'll therefore look at the top-hat solution. Can a USA based MUFfer please look at the 3/4" to 20mmm bore increase option on our behalf? NB: cutter diameter must be 4.75" (120mm) max.
Given that inner spacing shims that would have to be re-manufactured to go inside the cutter case, he said that the tooling cost (NB: they are punched out of steel) would be too high to produce just a handful.
Using a 30mm to 20mm 'top hat' reducing bush may work - but the height of it needs to be determined by how the cutter is packed. You'll already know that the MF-VN 25 requires you to install unused shims on the outside of the adjustable cutter to secure the cutter on the spindle. I'll need to check the required width. He suggested that a local engineering shop would be able to produce some of these.
Another option he said may be worth considering is to ask USA manufacturers. He said that 3/4" (19.05mm) cutter heads are fairly common there, and that it wouldn't be too big a task to machine these up to 20mm. The point being made here is that it's technically easier to *increase* the bore size than it is to *reduce* it. You might simply clamp them and re-bore them to an increase of 1mm.
I'll therefore look at the top-hat solution. Can a USA based MUFfer please look at the 3/4" to 20mmm bore increase option on our behalf? NB: cutter diameter must be 4.75" (120mm) max.
