Morso Cutting Help

[markkomark]

Hi All

Slight newbie here and having some issues with our Morso.

I have an air operated Morso H, which is working fine. It is second hand and not new. I have two sets of sharpened blades, plus the set that is in there. We have been using the set that came with the machine, and we were having some issues cutting, and the cleanness of the cut with some mouldings. Replaced the blades today with what seem to be a brand new "sharpened" set. First impression, cuts like a hot knife through butter, massive difference.

Made a frame, all seems to be square, no issues.

But - we are getting an issue with the side of the moulding closes to the support (the outside join). It seems to no be giving a clean cut. Below are some pictures, the large black is a MDF moulding, the other being a wood small moulding. On the small wood moulding, its clear that there is small white line that runs just before the cut. The MDF has never been great which was and is expected.

Can somebody help with what is happening and how it can be sorted?

Slightly separate note: we have boxes and boxes of MDF moulding (long story, its all been paid for by other jobs, so its all profit, otherwise it would be in the the skip!), but would like some help getting this outside cut sorted with the MDF, as it really is holding me back from making stock frames. Just feel I can't hold my hand out for money when it isn't correct.

Any help would be greatly appreciated!

Mark

[Roboframer]

Probably one of two things ...

The mouldings are just Morso-unfriendly and would cut well on a saw, to see if it's that, cut it the wrong way around, i.e. with the rebate against the fence.

If it cuts OK that way then your blades need to be advanced towards you ... further in to the channel between the two fences.

[prospero]

Try cutting with a sacrificial bit of MDF board behind the back edge and cut through the whole lot. If the cut is cleaner then it's maybe as Robo says, the blades need moving forward a tad. Don't ask me how to do it. Or you could just temporarily tack the board to the fences so it provides support right to the end of the cut. You'll maybe have to compensate a bit on the measuring scale.

Some mouldings are less forgiving than others.

[Roboframer]

Here's how to move the blades forward http://theframersforum.com/viewtopic.ph ... 19&p=85764

[markkomark]

Thanks for the info - I have already started having a little look around the morso and looking at alignments - but will be able to donate some more time later today.

Thanks for the link to the other topic - all seems nice and easy! However, using an air system has its problem, as the blades are in the up position, so have to release air from it first, to allow the blades to come down. Slightly reluctant to make an adjustment and move it to far forward - then let the air pressure drop the blades to find that they are touching.

[markkomark]

Plot slightly changes!

New problems but I think they are all related...

1) a very faint line is now visible on the right side of a cut moulding on the outside edge.
2) the cut is very rough, half way through a moulding we have stopped and it is clearly not giving a clean cut (also there is faint line is visible on the outside at this point)
3) can't open the release air valve with the tools here tonight, but i added a tipex to the blade edge, and it was clearly visible at the bottom of the morso, indicating that its either touching or the tipex is thick enough that its rubbing on to the block. I wouldn't think that the blades are too far forward, but I will check as soon as the valve can be opened.

I have tried the MDF route on the back of the moulding to see if that would help, and it didn't seem to make ay difference.

On a positive note, the frame that was made had nice tight corners, but was let down on the outside edge.

[Roboframer]

At first I thought it looked like you'd cut through a finger joint but the grain is the same both sides of the cut; it's the same bit of wood. The dark bits are OK but the light bits between are being crushed as they are so soft.

As for the line on the back that could be from your fence, the two ends that form the gap can get burred, try rubbing them smooth with an oilstone. You should be able to run a moulding along the fences in both directions, under some pressure, without leaving a mark.

[prospero]

To paraphrase Bill Shakespeare....

"The fault lies not with your Morso but with your moulding in that it is carp"

[Roboframer]

"Is this a dan-list which I see before me, The handle toward my hand?"

[prospero]

"Get thee to a nunnery!"

[prospero]

"O, that this too too carpy moulding would cut.
Join and resolve itself into a frame."

[Jamesnkr]

Parting, tis such sweet sorrow!

[prospero]

Once more unto the bench dear friends.....

[Smithy]

"A Morso! A Morso! My kingdom for a Morso!".

[prospero]

They are such stuff as frames are made on.

[Smithy]

Wherefore art thou, Prospero?

[prospero]

Shakespeare was a man of wit.
And on his shirt he had some jam.

While he was walking by St.Pauls,
A woman grabbed him by the arm.

She said, "You look a man of pluck!",
"Come upstairs and have a cup of tea and a ham sandwich."

"It may cost you a tanner or a bob",
"It all depends on the size of your Morso"