Видео

They are heavy duty, steel, 100mm (4") door hinges. I used 3 off. They are mounted flush on the ceiling side with extra long screws. Convered with wood trim to be flush with plasterboard.

@@sainttaw2616 Thank you!

The self adhesive 240v self adhesive silicon heat pad is insulated by a 10mm thick Cork floor tile. This is then retained by an aluminium plate. Has worked now for over 3 years without problems.

I used the steel from a dewalt dw100 bandsaw fine tooth blade. I ground off the teeth. The width was then 6.7mm wide. The manufacturing thickness is stated as 0.14" or 0.36mm. I have measure mine as 0.47mm painted. I used car enamel paint. No cracking experienced.

Thanks for that. The Z axis has been very stable. No need to keep Z plane mapping. Impressed by the up coming Prusa XL machine how it locks the head using the XY motion. Saves a motor and cabling.

Its a piece of tool steel, cross drilled with a thinner piece of tool steel. I would call it the key. The lock receiver is machined on a milling machine.

It's just sharing ideas. I think anyone going to the trouble of making such a thing will have their own ideas.

@@sainttaw2616 nice.. :-) Amazing design you did there. I would build one myself but i dont have time right now. Three ball screws, six rails and a lot of custom work I see, not to mention duet mobo combo. BTW did you cut your bed from the top plate?

@@marcbrann Yes the bed was from top plate material

@@sainttaw2616 and thats how it suposed to be done :-). I like designs like this. Well thought out.

6mm Ground Aluminium plate. Cut on my sons home made CNC machine using end mill.

Not 'his' printer... its E3D's...

@@HDFoxra : My car might have been designed by Ford, but it is still my car. I can only comment on what is shown in the video, and I liked a lot of what I saw. I am here for the enjoyment and inspiration I get from RUclips, not to enter into someone else's bunfight.

If this is not alright, I will remove your first video now and not share the second one. I’ll wait to hear from you

I have no problem with that. For me this is what its all about sharing ideas.

@@vivianwatts9863 thank you very much mate !!

@@vivianwatts9863 I'm all about open source and the operate on the same logic you do. The tool changing 3d printer group on Facebook is really cool actually, there are a bunch of us all sharing ideas together on open source designs ! Lots of fun and I'm sure youd enjoy it !

@@vivianwatts9863 facebook.com/groups/237615240416855/

The difference between the Bowden head and the direct drive head is the additional weight of the E3D extruder plus the stepper motor. The Zesty Nimble will replace both of these. So I believe the weight will only be a little more than the Bowden head. Note sure why retraction will be a nightmare? Is it because the nimble motor needs to run 10 times faster? The bowden tube build up is reduced. Anyway i'll let you know the progress. Print volume is about a 300mm cube as shown in first video. Most of my drawings are in 2D and not complete or modified. The CNC files are adapted for my machine and tools. As I have said before I would recommend the E3D heads as better support when available. However the chassis drawings may be of interest and I will try and tidy them up and release in future.

Saint Taw Hey I’m very impressed by your tool changer system and printer. Very cool about the Oragami metal work. I just thought I’d leave you a comment and say it’s bloody awesome fair play it’s amazing

@@sainttaw2616 no problem, and 2d drawings are good, I just build a cnc to build my futur next printer with a tool changer. And I can't wait to mill the same kind of x gantry as e3d (the new version in aluminum)

That was quick! Thanks.

@@sainttaw2616 I'm subscribed. Can't wait to see more. Came from the Duet Forums. Hope to see a full write up.

That's not 'his' printer... that was designed by E3D. All he did was cut some acrylic for slots that allowed his 'external' stuff passage. . . Also weird that he made his own tool head, as the ones provided by E3D with that printer are pretty darn good...

The controller is duetwifi. It is fully configurable. I do not believe they have a special version. E3d have not published plans as far as i know. So i don't know how close i am.

@@sainttaw2616 we will see in half a year or more.. And I will slowly collect parts

The kinamatic mount is really the way it is located to ensure repeatable xyz location. The method of securing it could be magnetic or mechanical. So you could have a magnetic kinamatic mount. The mechanical key method probably provides a greater securing force. I have had two extruders running. A bowden and direct drive. The bowden using e3d components required a retract of 4mm. The direct drive i am able to get away with 1mm retract. However the direct drive is much more heavy and feels top heavy. I am waiting for components to try a Zesty Nimble remote drive extruder. This may be the best of both worlds. Hope to provide an update video soon.

The are all made by me.

Did you assamble how do you fix them in place and where did you buy this small ball

The metal is machined to have a recess and the ball is then a pressed fit. It is also glued in with expoxy resin. They are ball bearings I had which are 4.7mm diameter.

I think it would take me more time to compile software than to design the machine. His design is served in front of you.

The pulleys under the base are about 16mm from front edge. The sides and base edge covers will be 5 or 6mm plastic. So there will be a 10mm clearance . So yes they could have moved forward but only by about 5mm.

I agree. I am no advocating my design of tool changer over theirs. I guess the design of the frame, bed an Z axis may be of interest. I also have a direct drive head in prototype. I expect they are working on one also but have not seen any details.

@@sainttaw2616 E3D showed a concept drawing of a direct drive toolhead during Sanjay's talk about the toolchanger last year. Iirc it had a smaller motor just to assist the main motor for flexible filaments.

It will be interesting how that performs. If they don't extrude at the same rate due to slip or slightly different diameter hobs you could imagine some tension or compression building up in the bowden tube. If they have to be calibrated thats added complexity. Still if the head hob was smooth or rubber this might resolve that.

I do like the idea of one standard for tool changers, but that would require people to share the design. Until there is a shared standard there will be lots of variations. After all the CNC world is full of standards.

This is something I have yet to learn. I currently have user defined macros to load and unload tools. Even then, I have mistakenly unloaded tool 1 into tool 0 slot which was occupied. Sensors in main head could detect which tool it has. Two digital inputs could give binary reading of tool number. Not sure if duet could utilise this though.

@@sainttaw2616 You could just put 4 endstops in the resting positions to detect if a tool is present

When done I would be happy to. However unless you have access to cnc etc I would wait for E3D tool changing heads. I guess the main machine frame as a larger version of E3D may be usefull for some. Thanks for comments.

thank you for your answer I will follow.....