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Re: #3D Fractal vice.
#3D
You use the downloaded STL files, most projects coming out of Josef Prusa printables are sound and tested. As regards 3D printing, 80% is artistic and 20% trial and error with filament and machines until you find that sweet spot that suits you. I have been printing for many years now and basically the early model printers?were a case of? trail and many errors. What settings were good last print, were not necessarily good for the next projects. Design of parts is fundamental, and try to avoid overhangs. I use the Prusa slicer, a much more advanced?version of Slic3r, very user friendly and in the expert mode you can paint in extra supports if necessary, but the program does this for you anyway, it warns you of possible? errors or problems refernce overhangs etc. Cura slicer I cannot get on with, but different horses for different courses. Just taken charge of 2 X Geeetech Mizar S machines, WOW what a difference,? these budget printers take the blood sweat and tears out of anything that I needed to do. 255 mm x 255 mm bed, 255 mm Z, Automatic bed levelling, touch button control. etc etc. I had in the past used the Geeetech Prusa I3 clone machines, work well but be prepared?to have losses unless you are fully conversant?to know what is going?wrong and you have a fix. I am?not sponsored?by Geeetech, but for a low budget machine, I think they are excellent,?plus after sales, and their forum etc etc. The carousel small?parts holder is all printed off the Mizars, I can honestly say, I did not have a bad part that needed reprinting. Again I downloaded the STL files from "printables'', good design and well thought out, I and I never?needed to alter any pieces, thank?god as? STEP file conversion to edit STL files can be a PITA. I use?FreeCad to do any STL file conversion, it seems to give me what?I need. STL to STEP to my mastercam MC once edited MC to STL. The Prusa slicer imports STL files and then saves them in a 3mf format if you want to keep revisiting the file. Hope this all helps. On Wed, 28 Feb 2024 at 05:53, mike allen <animal@...> wrote:
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John |
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Re: #3D Fractal vice.
#3D
Mike I think the parts (STL) files would need to be converted to a STEP file format, from there each?part would have to have a draft angle 3-5 degrees ? added to allow the castings to slip out the molds. This would then need each part to be machined. You could resin print as opposed to 3D print using the original STL files. Cheers On Wed, 28 Feb 2024 at 06:00, mike allen <animal@...> wrote:
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John |
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Re: #3D Fractal vice.
#3D
If that was meant for me, I'm not sure what you mean. If I press the link I see: I'm not logged in and that is what I see... On Tue, Feb 27, 2024 at 2:05?PM Ralph Hulslander <rhulslander@...> wrote:
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Buffalo John |
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Re: #3D Fractal vice.
#3D
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On Tue, Feb 27, 2024 at 8:40?AM John Lindo <bechetboat@...> wrote:
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Buffalo John |
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Re: #3D Fractal vice.
#3D
Hi Ron Try this 180109-fractal-vise-4c544fff-f4a6-4205-bdb0-de77e55aa375.pdf Cheers On Tue, 27 Feb 2024 at 12:50, Ron Y <ryulick@...> wrote:
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John |
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Re: #3D Fractal vice.
#3D
Forgot to add, the downloaded Josef Prusa Printables info contains a full set of STEP files,?
I like the overall size of the 3D printed model, so dimensionally I will not need to scale when making a steel version. if necessary I can convert these STEP?s to Mastercam files MC and use to CNC program cutting/profiling the parts that way similar to the video. -- John |
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Re: #3D Fractal vice.
#3D
Jim
Thanks for the information. Certainly more food for thought. I think most of the jaw work can be done on conventional mills and lathe faceplate work, using some dedicated tooling to hold the parts for eccentric work. Some profile parts can be machined as "rings" and then cut in half, faced back to half moons with a face mill. Good swan necked dovetail groove boring tools will be paramount, not an problem to make from drill rod and then harden/temper. Anyway, I am going to give it a go this summer. it took me 5 years of continual work to build a working model steam tractor, this should be? a 1 year project? I think. ???? -- John |
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Re: #3D Fractal vice.
#3D
开云体育There is a teardown and repair of one on U tube. ? There are definitely dovetails on that one. At least some of the male dovetails are separate pieces, screwed into the piece behind it. ? ? ? ? R.J. (Jim) Klessig, P.E. Senior Power Systems Engineer ? Electrical Reliability Services, Inc. 1876 Gwin Rd, Mckinleyville, CA? 95519, USA O 707-616-5509| | ? -- Jim Klessig |
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#3D Ferris wheel small parts holder.
#3D
Uploaded inti the Files section photos of my recent Ferries wheel small parts holder.
All information including the standard STL files are available from Josef Prusa Printables. free downloads. Currently printing bin covers, for the various size trays. I chose 4 different length trays that slot into the carriages. The wall mount French clef/clip 2 pieces I have the STL file, also I will print bin identification label holders that business cards reverse side can be cut and slotted in , again STL files are available free from me. This wheel is certainly a good organiser and space saver for me. -- John |
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Re: #3D Fractal vice.
#3D
Here is a link for a 1923 American Machinist commercial Fractal Vise also known as a Mantel Vise (why a Mantle Vise? - it was made by Mantle & Co of New York, NY) : It was invented by Paulin Kunze - an Austrian. On Thu, Feb 22, 2024 at 9:30?AM John Dammeyer <johnd@...> wrote:
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Buffalo John |
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Re: #3D Fractal vice.
#3D
开云体育The photo shows the commercial one does have dovetail joints.? ? ? I’d build a special clamping feature to hold them on the 4th axis and just use a dovetail cutter to cut the outer grooves as the 4th axis turned.? For the For the inner grooves clamped into a fixture but this time on the lathe and a specially formed tool to cut the mating groove since now it’s just like a thread from the perspective of an internal channel. ? If the fixture blocks are designed to not be square but rectangular then it may well be possible to mount it centered on the lathe and depending on which side the part is clamped the actually machining is pretty simple.? Same with the 4th axis. ? I could also just be under thinking it. John Dammeyer ? From: [email protected] [mailto:[email protected]] On Behalf Of John Lindo
Sent: February 22, 2024 8:34 AM To: [email protected] Subject: Re: [digitalhobbyist] #3D Fractal vice. ? Hi Mike |
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Re: #3D Fractal vice.
#3D
Hi Mike
Thanks for that, I did not know they were commercially available, first produced I think around 1940??s. I watched a You tube on repairing one and for an engineering project I was thinking of maching one from scratch in mild steel? and the final small jaws that actually do the gripping using Silver steel (drill rod) and hardening/temper. The basic engineering "method" for me would be to make the base vice, just normal standard milling from bar stock or even find a cheap cast iron drill press vice and modify it. The actual swivel jaws would need to be a combination of either lathe faceplate and or CNC milling and jig boring, again not really a problem. My concern over the past few weeks thinking about this new project is the cutting of the male and female tenons that stop the jaws from falling out, as they should "slot into each other by swivelling in place" The 3D printing did an excellent job of this, but to conventional machine these tenons would be tricky. It would require an awful amount of dedicated tooling, once used then it?s a throwaway as i would only make one vice to hold the parts. even? using a special double tipped dovetail boring bar. you could not use a standard milling dovetail cutter indexing the part on a 4th axis head I think I am correct in this. I refer back to mikes link of commercial unit for sale $$$$$$$ and I notice when zooming in there are no dovetails, the connecting lips look flat, so how do the jaws stay in place? Any forum members are welcome to offer there opinions on this feature, as if NO dovetail tenons are required, than the manufacture is doable without a lot of sweat. Thanks -- John |
John Lindo
BuffaloJohn