3D Printing

Matt2000

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Working with PVA dissolvable filament is more difficult than I expected. Getting it to stick to the bed is one thing, getting it to stick to itself is another entirely...
 

Matt2000

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Had a break from 3D printing for a while, messing around with that PVA stuff really put me off. I've abandoned that idea now and gone back to more standard stuff.

I've wanted a quick-release mount for my Makita charger and batteries for a while but didn't get around to it, after playing with some ideas and reaching some dead ends I decided to use some neodymium magnets I already had to make a set of magnetic feet for the charger along with magnetic cups that fitted on to the pegboard. They're attached to the pegboard using plastic rivets and #8-1/2" screws.





I also made some mounts for the batteries.



I'm no fanboy, honest.



I've almost finished a mount for the tools, I don't expect it to handle the heavy drivers but the LED torch and USB power supply should be fine.
 
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Matt2000

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I should say that the mounts for the batteries are based on models made by Simhopp on thingiverse. I just altered them to suit the pegboard, actually doing the whole thing in Microsoft 3D Builder. I finished printing three tool holders today, based from the battery model from the same guy. They needed some finishing as the supports are harder to remove and made the tool a tight fit, I found that using heat was the quickest way to loosen them up.

I wasn't expecting them to hold much weight, just small stuff, but to my surprise they will hold my new DTW1002Z impact wrench and that's hard to hold in your hand from the battery end. This thing weighs 3.6kg and that's one heck of a lever on the mount.



Needless to say the mounts are perfectly happy with my impact driver and LED torch.



Edit: Just realised I should post a picture of the mount itself. It's similar to the battery mount, holes for pegboard mounting are exactly the same and at the same depth.

 
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Matt2000

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I noticed the other week that some of the new 3D printers have this fancy magnetic build platform that can be removed and is flexible, allowing the part to be easily peeled off. The Creality and Ender printers seem to be the ones, I don't have one of those but I wanted in.

I bought the smallest I could get, 235x235mm, which was just a smidge larger than the 230mm bed width on my CTC. The length had to be cut down to 150mm and this allowed me to leave a lip to lift the material up by. This damn stuff was difficult to cut through.

To prep the bed, first I had to peel off the blue tape and the kapton tape, damn stuff. This was well overdue for replacement but in reality I didn't have any issues arising from its neglect. This printer really is robust and now I've found a filament that works again (Athorbot changed their PLA and it became shit) I rarely get failed prints.



I scuffed up the aluminium surface to help the 3M VHB stick and then cleaned it up with IPA. There were some scratches from aggressive attempts to remove parts, I didn't try to get rid of these but just get rid of any sharp edges.



Stuck like shit to a blanket.



Did a print on it tonight, a AA battery holder for the pegboard. Nice to go from here... (yes that is dust around the printer, it doesn't get cleaned)



...to here without having to remove it from the print surface. Bending the material and peeling off the print was so satisfying and easy compared to the previous method of prying it off with a screwdriver.



As a bonus the material appears to hold the heat well, while the bed took a little bit longer to get up to temp it didn't need to be active anywhere near as much as it did before. That has to be a good thing, for the life of the heated bed if nothing else. :)
 

thomas

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Fuck.. I want a 3D printer.. because reasons..! What's the cost of admission these days for a simple one, and what's the sweet spot? Or is that based on what one wants to print? (I don't really have an answer for that)
 

Matt2000

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For home use the Creality Ender 3 seems to be popular at the moment, over here it comes in at under £200 and is much more modern than mine. It's also apparently great for beginners, because reasons!

Generally, home printing is restricted to a 230mm square print area (230x150mm in my case). That doesn't seem much but you can print pretty big objects on that and there's nothing stopping you from printing diagonally across the bed. Because of this restriction most of the things you download online are designed with this in mind and your own designs would of course need to be based around it. Some objects may need to be split up, such as the phone tray I designed and printed for Bugsy. The Ender 3 would've been able to print the whole thing.

Your bigger restriction is on small things, these FDM printers can only do small detail up to a point as the extruder nozzle is usually around 0.4mm. Beyond that you need to look at resin-based printers like my new-ish Anycubic Photon with its LCD screen and UV light, it's fascinating to see objects emerge from a vat of smelly goo. As it happens, I used it for the second time since September today to make some tiny test objects, micro SD card for scale.

 
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