Forum

EeZeBilts From Keil Kraft

Could think of a lot of uses for your too - but would have to be a bit more powerful/stronger build even for Jelutong and the like. Trouble is nothing like that available here - cheapest we've seen was about R25k......... The larger ones running to millions.

5 years ago by redpmg

Forum

CAD with Designspark Mechanical.

The basic principles are quite simple really, Everything is worked out on a co ordinate system, you could say fancy map reading or navigation. A map is divided into squares, each square being part of a numbered grid, same on a nautical chart. so to get from A to B, you navigate accross the chart, so point A may be square 21/06, 21 squares along and 6 up. Point B is say 18/32 so 18 along and 32 up. (asleep yet?) to get from A to B you will plot a route through the grid from one reference to another. Similarly, our , laser cutter 3Dprinter plotter etc works on the same principle, we have 3 axes, X Y and Z X being left to right, Y back and forth and Z up and down. Cad software converts a drawing, or draws as a set of co ordinates, so for a 2 dimensional square, the co ordinates could be, say, X0 Yo, bottom left corner, and X10 Y10 the top right. X5 Y5 would be the center of the square. To add a 3rd dimension, the Z axis gets involved, so on a 3D print, the first layer would be z 0.15, second Z 0,3 etc. I am using Designspark Mechanical to illustrate, the photos are, hopefully self explanatory... Next time will prepare the object for 3D printing.

5 years ago by Nickthesteam

Forum

CNC boat kits...?

It is easier than you would think. I only got into 3D printing 2 years ago, once you see how it works the rest is easy. Main difference between a and a 3D printer is that a 3D printer adds material to make an object and a removes material.

5 years ago by Nickthesteam

Forum

CNC boat kits...?

Bit of an update on my . All up and running now and I am well chuffed with the results. I abandoned the Arduino based controller and opted instead for a Duet 2 WiFi board, a 32 bit controller with on board drivers. The machine can be loaded with a job directly from my computer/laptop/mobile phone and progress monitored from same. I have also added a 7 inch Paneldue touch screen display for when my daughter is hogging all the internet bandwidth. It has been going for a couple of weeks now and I haven't stopped making stuff, all for other folks! I need to find some DXF files for model boats now. I have a set of plans for a Lysander aircraft that my mate wants me to cut out for him, so far my efforts to convert PDF into useable vectors have come to nought.

5 years ago by Nickthesteam

Forum

CNC boat kits...?

How much dust is there when cutting balsa ? MDF is problematic as its made using formaldehyde and the dust is really damaging to the lungs. Laser cutting is not a problem with MDF as it burns. but has pollution problems and requires a scrubber on the exhaust . Most of the sites selling s seem to advise you to have a cover to minimise dust! Was thinking of changing to a desk top laser for engraving and using a router for cutting but very wary of dust associated problems.

5 years ago by redpmg

Forum

CNC boat kits...?

Hi, I am in the process of building an Openbuilds Ox machine. So far I have built the gantry and Z axis. The drivers for the Nema 23 motors should arrive on Saturday so I can spend the bank holiday weekend fiddling about with the electrics. I will use a Dewalt 900Watt router for the spindle so there will be enough power to cut aluminium sheet. I have been using 3D printers tobuild a minesweeper with great success so a will add to mt arsenal...

5 years ago by Nickthesteam