Hi Sylvain,
the conversion cdr > pdf so far did not presented dimensional variation. But in the chain there is also the printer.
When I check the printing, it is hard to find a difference with my dimensional mark and my ruler. If you sum all the steps, many are the sources of errors, probably limited to few pixels anyhow.
Within few tens of mm still I will not worry because the sanding manual process is most of the time much larger.
here the lateral view of the mistaken position of shadow 2 :
The deck line was already modified during planking as visible in the picture
The bottom excess will be partially or totally removed during sanding up to the acceptable recover form and shape.
This lateral view show the area that need rectification during sanding :
This picture shows the amount of material that shall be removed.
Measuring the side height may help
Sorry Alan for this extra work.
Btw, this “unwanted” additional volume is not changing the overall performances, at the contrary it may help a bit. Personnally I will stick to my original form .
[QUOTE=claudio;62506 Btw, this “unwanted” additional volume is not changing the overall performances, at the contrary it may help a bit. Personnally I will stick to my original form .[/QUOTE]
Good observation Sylvain & no problems Claudio, however after reading Sylians post this morning I did quick sanding of the bow section to check hull form using orginal frame templates and my findings are:
When LWL line of frame 3 is aligned to the hull LWL, the keel line is too short by 2.5 mm
When keel line is aligned to the plug at frame 3, the frame LWL is 2-2.5 mm too high
Just double checking Claudio, which one is right ?
Don’t want to complicate things futher, but when I then looked at the actual side profile of the bow section, my eye says frame is too low and maybe should be built up to have smooth keel line from frame 3 to the bow OR I should sand down frame 0 ? hmmm…
btw when Claudio told me of the error orginally , I had just straight lined the planking from frame 3 to the bow (green line) I did not adjust any of the orginal frames.
Another way to see it. The red line shows why there is an unwanted lump.
P.S. Unfortunately, the discrepancy I observe comes from the PDF to CAD conversion, not the printer. Like in this example, none of the imported frames had an exact 110mm between the LWL and the base board. They were +/- 0,27mm off and I still get a correction of 2,9mm insted of the 2,5mm I should get. I guess I can live with this since it is within my cuting tolerance anyway. I don’t want to distract this tread anymore for this matter.
Sylvain, I toke your image since what you put in is not entirely correct, see below
You traced a red line at the bottom as was supposed to be a straight line. Is not since the Rocker line is a curve as can be seen in the lateral general view of the project.
I do not understand why you go for a CAD conversion since the PDF files are ready for printing in the scale 1:1
Let me know please !
Cheers
Claudio
PS:
I think I’m going to check all the shadows drawings to ensure that there are no conversion defects from CDR to PDF
I am sorry that I made you work for my lack of clarity. I was not trying to draw the rocker line. The red line was an arbitrarily visual guide in an attempt to illustrate that the “old” rocker stringer was lower (on this drawing, higher on the mould) than the new one, which explain the lump on the bow. I was just too lazy to do the demonstration as you ended up by doing! Thanks anyway.
Don’t worry Sylvain,
it is my pleasure and with Coreldraw 5 I do all in a very fast manner, sometime too fast !!! ahahah !!
You got the new ZIP file with all revised shadows, no new problems found - all OK.
BTW, I suppose you got the alert about Maleware on this forum.
My PC is now cleaned from 53 infected files !
Bonsoir
ClaudioD
Hi Alan,
me too I have finish wood sanding this morning with counter forms checks.
Now is covered with white under coat and in a couple of days Ii will start the glass lamination 2x 80g/m² with wet sanding in between and eventual small repairs.
Cheers
ClaudioD
PS:
before lamination I shall integrate the supporting legs to raise the hull from the bench
