Forum Replies Created
found out how this works now.
I did al right, BUT I’ve overlooked the info in the delftship manual, that the surface in the layer (layer one) that should be cut by layer two (the cutter) must have a rather fine net of edges. The layer to be used for the cut seems not to be critical, but the layer that should contain the new control points is.
New control points are only generated in existing edges that are defined on layer one – the cutted one – and are cutted by layer two – the cutter.
There are no new points created in a surface!
Stupid, huh? But this has eaten a lot of my time for trying to make something happen that really does not work – because of way too less edges in the surface to be cut.
They can easily created by selecting the edges around the area where the cut lies and then clicking “split advanced” one or more times before the intersect attempt.
sorry for any confusion, but my last is completely WRONG – so please IGNORE it.
I made some errors by adding the different colors to differnet side of my test cube.
the orientation of delftship (axis and views) is correct as it is.
to have zero x at the stern of a ship allows to show view “rigth” for the starboard side, and *left* for the board side of a ship.
Probably I’ll come up with a new try (and hopefully better one) later on ;-).Attachments:
I’ve made a simple box with different colors on all sides to find out how rotation work.
First of all: It works.
Wfhat I found somehow puzzling is the naming of the views in relation to the XYZ axis. It seems to have another logic than in a CAD system.
When looking from the top vertically onto a flat horizontarl workplane in a CAD system “Front” views from me and “Back” views against on the Y axis.
In Delfsthip “Aft” views from the left hand side of the X-Axis, and “Front” views from on the right hand side of the X axis.
When looking from the top vertically onto a flat horizontarl workplane in a CAD system “Left” looks from the left hand side of the X axis, and “Right” looks from the right hand side of the X axis.
In Delfsthip “Left” views against me on the -Axis, and “Front” looks from me on the Y axis.
And Delftship allows to define the Zero Point on the left or on the right side of the X axis.
The use of the views in Delfsthip makes sense, but one should be aware of these different namings of views ;-).
I’m running some test just now with my bx model to find out how rotate really works ..
We’ll see .
I have a similar problem. I’m trying to rotate a tiller (put together from several cylinders and a sphere) alon the y axis by some degrees. I simply do not know how to do this. I think to make all explanations given here so far would be way more understandable if someone could add one or more drawings showing the base part to be rotated, the rotated part, and all the entries needed in the rotate function to make this happen.
I think that graphics are always very valuable for better/correct understanding any textual or spoken explanation 🙂
Text explanations alone create assumptions at the readers side. If the reader’s aussumptions are different from the writer’s meaning, the reader’s try to redo what the writer says will simply not work 😉Attachments:
I’m in a similar situation. I have a customer who plans to build a replica of an old caravel or galeon with a lenght of about 15 meters. Does somebody now an experienced designer/naval architect that has created already designs or even plan drawings for such a ship? My customer wants to build with modern wooden boat building methods.
Any help is highly appreciated.
curves can be added to selected edges (ctrl – click to select all edges fo a certain chine) by – surprise, surprise – the menu point “add” in “home”, top menu area “curve”.
To see them mark “control curves” in “home”, top menu area “Hull display”, “control curves”, and selecting the curve in the model as well (blue line). This can be a bit nifty as the blue line is hard to see when the model is rather well faired already. Zooming in helps with this.
Now I’m eperimenting with fairing the chines and the attempt, not to end with a completeley different shape at the end. Kind of check and balance – same thing as many other thinhgs in life too :-)).
Love Delftship 🙂
I have the same problem.
My kayak has a closed deck now. I’m tried a lot of different approaches, but am still unable to create the hole (keyhole type) for the cockpit opening in the deck, the coaming riser in it (about 10 x 40 mms -w and h) and the coaming lip at he upper edge of the coaming riser (about 10 x 20mms h and w) as well.
I’m not only interested in an example, but in a description of the process how to make it.
This is it! Thank you very much. I’m impressed!
I imported the file as “chines”, which worked but produced strange ends on plank 2. Tried to find out why, but was unable to do so.
Sometimes another approach works better, but think to know something can be a very high obstacle some times :silly:
p.s. How can one create mor than one model in delftship, and how can I get rid of the two models of three I do not need?
I undersatnd what you sayy, but as I’m developing a “real size” boat, I cannot scale it down. Could be an option to draw it 50 times bigger than what I want to have in the end, he he …
In the mean time I’ve found out that the type of the lines in the exproted dxf depensd on the version of autocad one selects when exporting e.g. the stations. I’ve been told that the default export creates splines, and that chosing autocad version 13 or 14 does the same. This is correct. The stations in the dxf are symmetric too. Besides both types of lines (polyline and spline) are rather the same – so the polyline and the spline curves are very similar and do show the same contour with very small deviations. The main difference is that the control points of the polyline lie on the “corners” of the straight lines the polyline is created with, but the control points for the splines do not lie on the line itself (this can be checked / seen in a good cad program).
I now export the contours of the stations as splines (autocad V14 option), and they look rather well. The remaining problem ist to connect the four splines I get for a certain station (hull/deck left and right side) to a continous line that is needed for the conversion to g-code. I’ve found out that turboCAD an connect splines, but the result will often be a polyline with a high number of control points. turboCAD does connect splines as splines only if the two arcs where the splines meet form together a proper arc too. As this is not the case with my stations, I always end up with a closed polyline contour. I’ll check this with a cnc milling converter, but think that the precision is good enough for a real size boat. We’ll see …Attachments:
your models look really great !
I’m using Delftship Pro 8.08 to develop a new kind of recreation rowboat. By doing tghis I’ve seen that the exported stations (dxf file) have spline contours. These splines are created as a number of straight (not bent) lines connecting points. So the program I use to convert the dxf into g-code for the cnc mill tells and shows me that there are “staircases” instead of smooth curved lines.
On your photos it seems to me that your cnc mill had smooth lines to mill. Correct?
I’m interested in your process from Delftship dxf Export till the g-code and the milling.
All tips and hints to improve the smoothness of the station border lines are highly appreciatedAttachments:
I’ve the same problem. The line segments when exporting e.g. statios as dxf are too long to create a smooth curve I want to use as input to create the cnc milling code.
Is there really no option available to export e.g. the stations as splines in a dxf file?http://www.delftship.net/DELFTship/media/kunena/emoticons/ermm.png
This means must I really smooth / convert the exported polylines (dxf) to smooth curves by my own with a cad program, like e.g. turboCAD?
All recommendations are highly appreciated http://www.delftship.net/DELFTship/media/kunena/emoticons/smile.png
I’m using Delfship Pro 8.08.
Where can I define the segment lenght for the DXF export for the stations, please? Like to have curves as smooth as possible for CNC milling. Was not able to find it, sorry.
Any help is highly appreciated
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