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Author Topic: So ... 3d Printers....  (Read 232769 times)

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HaRuMaN

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Re: So ... 3d Printers....
« Reply #640 on: February 13, 2018, 06:08:36 pm »
So they won't let it publish for 24 hours since it's a new account, but when it goes live it will be here:

https://www.thingiverse.com/thing:2792174

Should be sometime tonight.

pbj

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Re: So ... 3d Printers....
« Reply #641 on: February 14, 2018, 08:30:52 pm »
Your link is live! Now I just need one of you big, strong men to print me some...

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Re: So ... 3d Printers....
« Reply #642 on: February 14, 2018, 08:37:10 pm »
Your link is live! Now I just need one of you big, strong men to print me some...


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Re: So ... 3d Printers....
« Reply #643 on: February 14, 2018, 10:00:17 pm »
print me some...
First test print started.

The notes on thingiverse say that the screw hole sizes aren't confirmed yet.

What size screw does it use for the crossbars (outer holes) and what size for the PCBs? (inner holes)

Looks like they are different sizes.  #8-32?  #6-32?


Scott
EDIT: Print completed. The holes are different sizes.

The crossbar holes are the right size for #6-32 screws.

The PCB holes appear to take something smaller than a #4 (0.112" diameter) sheet metal screw, maybe a #2 or #0 sheet metal screw.  :dunno

Turning the print 90 degrees on the long axis should result in a smoother ramp.

EDIT2:Turning the print increases the odds of the PCB screw holes splitting due to layer separation.

EDIT3: Working printable version of this Wiliams Drop Target Guide posted here.
« Last Edit: April 14, 2018, 07:53:39 pm by PL1 »

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Re: So ... 3d Printers....
« Reply #644 on: February 14, 2018, 11:18:30 pm »
The inner holes are smaller.  A number #6 machine screw was ever so slightly too large. (One of my attempted kludge repairs)

Original part was a sheet metal screw.  Maybe their thread is a little smaller?

I can believe 6 and 8 are the right sizes.... will try to confirm tomorrow.

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Re: So ... 3d Printers....
« Reply #645 on: February 15, 2018, 01:38:00 am »
The inner holes are smaller.  A number #6 machine screw was ever so slightly too large. (One of my attempted kludge repairs)

Original part was a sheet metal screw.  Maybe their thread is a little smaller?

I can believe 6 and 8 are the right sizes.... will try to confirm tomorrow.
Machine screws and sheet metal screws have the same thread outer diameter for corresponding sizes, but the tpi (threads per inch) are different.

The threads on a #6-32 machine screw (32 tpi) are the same outer diameter as the threads on a #6-20 sheet metal screw. (20 tpi)

#2: 0.086"
#4: 0.112"
#6: 0.138"
#8: 0.164"
----------
Here are the rough measurements of the printed part:
2.835" long
0.795" wide
0.775" tall at the highest parts (inner screw towers)
0.200" outer diameter of inner screw tower  *** this looks too thin to handle a #4 or #6 screw hole ***
1.065" center-to-center on the inner screw holes
2.475" center-to-center on the outer screw holes


Scott
EDIT: Working printable version of this Wiliams Drop Target Guide posted here.
« Last Edit: April 14, 2018, 07:54:45 pm by PL1 »

pbj

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Re: So ... 3d Printers....
« Reply #646 on: February 15, 2018, 09:44:32 am »
Snapped a few pics this morning.  Sorry, didn't have a metric ruler nearby.

The black screw is the one that holds the horseshoe PCBs to the inner posts on the plastic part.  It's too small for a 7/64" hole and too large for a 3/32" hole.  The larger bolt screws perfectly into a 1/8" hole, and slides through the larger holes on the end of the plastic part.  Note that it just passes through that hole, it doesn't actually screw into it.






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Re: So ... 3d Printers....
« Reply #647 on: February 15, 2018, 02:29:59 pm »
The black screw is the one that holds the horseshoe PCBs to the inner posts on the plastic part.  It's too small for a 7/64" hole and too large for a 3/32" hole. 
Since it's between 0.093" and 0.109", it is probably a #3 x 5/16". (0.099" diameter threads)

If so, those two screw holes probably should be enlarged from about 0.055" and 0.070" to about 0.081" (#46 drill bit) or 0.078" (5/64" drill bit) to reduce the odds of splitting.

The larger bolt screws perfectly into a 1/8" hole, and slides through the larger holes on the end of the plastic part.  Note that it just passes through that hole, it doesn't actually screw into it.
From your pictures, it appears that the machine screw is #5-40 x 5/8". (0.125" diameter threads)

For these holes, a *very* slightly larger diameter hole will allow the screw to pass through easier or you can run a 1/8" drill bit through them.
--------------
Do you have calipers to verify the outer diameter thread sizes?


Scott

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Re: So ... 3d Printers....
« Reply #648 on: February 15, 2018, 02:34:00 pm »
Yes, I've got calipers laying around somewhere as part of that research lab tool looting I did 3 years ago.  I'll dig them out and measure anything you want, baby. 

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Re: So ... 3d Printers....
« Reply #649 on: February 15, 2018, 03:59:34 pm »
If you could confirm these four measurements, that should be enough for Haruman's friend to make several helpful adjustments to the .STL file.

1.) 0.125" outer diameter threads on the #5-40 x 5/8" machine screw

2.) 0.099" outer diameter threads on the #3 x 5/16" screw

3.) 0.081" (?) screw body diameter (valley between the threads) on the #3 x 5/16" screw
- The pilot hole should be this size or slightly larger to reduce the odds of splitting the cylinder during tightening.

4.) 0.200" outer diameter for the inner screw towers
- Can those cylinders be a larger diameter to reduce the odds of splitting/stripping?
- If so, how much larger would you recommend?


Scott

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Re: So ... 3d Printers....
« Reply #650 on: February 17, 2018, 11:02:43 pm »
1 - 3.2mm

2 - 3mm

3 - 2mm

4 - hair under 5mm.  I think this could be enlarged slightly.


pbj

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Re: So ... 3d Printers....
« Reply #651 on: February 19, 2018, 08:40:21 pm »
Alright, since I don’t know how to read this thing... I present photos.


HaRuMaN

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Re: So ... 3d Printers....
« Reply #652 on: February 19, 2018, 09:13:25 pm »
damn, old school calipers

Nephasth

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Re: So ... 3d Printers....
« Reply #653 on: February 19, 2018, 09:27:37 pm »
Alright, since I don’t know how to read this thing... I present photos.

Top scale is cm broken down to mm. Bottom scale is inches broken down to tenths of an inch. So for example, the screw in the last pic is 2.1 cm long. (which is the wrong way to measure the length of a fastener, correct length of that screw is 3/4")
« Last Edit: February 19, 2018, 09:32:35 pm by Nephasth »
%Bartop

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Re: So ... 3d Printers....
« Reply #654 on: February 19, 2018, 10:27:42 pm »
damn, old school calipers

New in package trash pull.  The great tool heist of... 2015ish.


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Re: So ... 3d Printers....
« Reply #655 on: February 19, 2018, 10:51:10 pm »
I would upgrade to a digital if I were you.  I think I paid 8 bucks for mine and it means I don't have to pull out a magnifying glass and a flashlight every time I need to measure something.

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Re: So ... 3d Printers....
« Reply #656 on: February 19, 2018, 11:27:30 pm »
Here's how to read this set of vernier calipers.

I'll check the rest of the pictures soon.


Scott

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Re: So ... 3d Printers....
« Reply #657 on: February 20, 2018, 02:45:42 am »
Digital FTW!

And just to change subject slightly my Ms wanted a model of Bowser.
Its taken me 6 failed attempts to finally print it without some part breaking off or failing!

Wayy to much support needed for this dude lol



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Re: So ... 3d Printers....
« Reply #658 on: February 20, 2018, 02:46:39 am »
Just posting a materiel guide Simplfy3d put out. I am sure the settings will be the same with most slicers.

https://www.simplify3d.com/support/materials-guide

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Re: So ... 3d Printers....
« Reply #659 on: February 20, 2018, 02:52:53 am »
Bowser looks cool dude. Either of you plan on painting it?

Titchgamer

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Re: So ... 3d Printers....
« Reply #660 on: February 20, 2018, 04:33:03 am »
Yup it will be painted by the Ms.

She has a back log of painting atm, Ime printing stuff faster than she can paint it LOL

Shes doing my Terminator bust atm :p

nitrogen_widget

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Re: So ... 3d Printers....
« Reply #661 on: February 20, 2018, 04:22:06 pm »
Yup it will be painted by the Ms.

She has a back log of painting atm, Ime printing stuff faster than she can paint it LOL

Shes doing my Terminator bust atm :p

Which Printer did you get again?
My tax return will be in any week.....

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Re: So ... 3d Printers....
« Reply #662 on: February 20, 2018, 04:24:52 pm »
Widget, depends on how hackerish you wanna get.  The Anet-A8 is a kit.  That requires a lot of assembly/calibration/babysitting, but is very inexpensive.  A lot of us have that one.  Then there's the Creality CR-10.  More expensive, but it's a lot more turn-key.  Comes assembled and ready to print I believe.

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Re: So ... 3d Printers....
« Reply #663 on: February 20, 2018, 04:53:38 pm »
Yup it will be painted by the Ms.

She has a back log of painting atm, Ime printing stuff faster than she can paint it LOL

Shes doing my Terminator bust atm :p

Which Printer did you get again?
My tax return will be in any week.....

I got the CR10 mini.

Very happy with it and it has loads of support.

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Re: So ... 3d Printers....
« Reply #664 on: February 21, 2018, 01:11:41 am »
I don't want to scare people away from the anet though.....  if you are comfortable with assembling furniture the a8 isn't all that different..... there are just a lot more parts.  It's the last "tool" I've bought in a long time that I use constantly.  It's good for figures and stuff as well, but I haven't had much time to play with that aspect of it yet. 

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Re: So ... 3d Printers....
« Reply #665 on: February 21, 2018, 11:51:41 am »
Anet 4 Lyf - if you like to tinker, it’s great for customizing
***Build what you dig, bro. Build what you dig.***

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Re: So ... 3d Printers....
« Reply #666 on: February 21, 2018, 11:53:18 am »
Widget, depends on how hackerish you wanna get.  The Anet-A8 is a kit.  That requires a lot of assembly/calibration/babysitting, but is very inexpensive.  A lot of us have that one.  Then there's the Creality CR-10.  More expensive, but it's a lot more turn-key.  Comes assembled and ready to print I believe.

I definitely want a kit.
I like to tinker and tweak.
I've seen the quick guide on what to get for the A8 and I've been looking at some of the Delta kits also.

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Re: So ... 3d Printers....
« Reply #667 on: February 24, 2018, 09:38:29 pm »
I present photos.
Not-so-good news: No luck getting readings from the photos to match up with thread-size charts.   :banghead:

Good news: Found a diagram for the Williams D-7931-5S drop target assembly on Marco Specialties showing that the machine screw is #6 x 3/4".   ;D

Mixed news: The PCB screws are labeled as P/N 20-8815 in the diagram below and P/N 20A-8815 in another version of the diagram.

The horseshoe screws are sheet metal #4 x 1/4".

Question for PBJ: Are the PCB screw threads the same diameter and pitch as the horseshoe screw threads?



Anyone know where this diagram came from?

Haven't found any manuals with a similar parts breakdown.


Found it.   ;D

Planetary Pinball has online copies of Bally and Williams parts catalogs, including Williams 1980.

Drop target assemblies are on pages 113-118 -- they all use the 03-7479 guide.

The D-8362 assembly diagram on page 116 shows PCB screws that are the same P/N as the horseshoe screws. (4104-1001-06)


Scott
EDIT: Working printable version of this Wiliams Drop Target Guide posted here.
« Last Edit: April 14, 2018, 07:55:40 pm by PL1 »

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Re: So ... 3d Printers....
« Reply #668 on: February 24, 2018, 11:54:59 pm »
I printed that thing too:




That looks awesome!

Sent from my SM-N950U using Tapatalk


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Re: So ... 3d Printers....
« Reply #669 on: March 07, 2018, 12:28:28 pm »
So after making the whole VR PVC cockpit thing I soon realized how annoying it was to move around in my small VR room. So instead I wanted to try to incorporate HOTAS mounts onto my computer chair I already had. I have the idea, I am in the middle of printing it all up. Finished one piece last night 14 hours, 3 shells, 2.0 layer height.




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Re: So ... 3d Printers....
« Reply #670 on: March 07, 2018, 02:05:03 pm »
That is a great idea!  PLA or ABS?

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Re: So ... 3d Printers....
« Reply #671 on: March 07, 2018, 02:11:35 pm »
PLA, I fear its not going to hold up, but so far the first part is very solid.

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Re: So ... 3d Printers....
« Reply #672 on: March 07, 2018, 02:34:54 pm »
I've had good luck with PLA.  I do 3 perimeters and a 50% quad subdivision infill when I need strong parts.  So far the only time I've needed to worry about PLA is if the part might get exposed to heat above 100ish degrees.

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Re: So ... 3d Printers....
« Reply #673 on: March 07, 2018, 04:00:19 pm »
The first thing I did with my test pla cube was stand on it.  I then tried to smash it with a hammer.  It's still fine.  Pla is susceptible to heat as mentioned, but other than that it's very strong, probably just as strong as abs. 

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Re: So ... 3d Printers....
« Reply #674 on: March 07, 2018, 06:47:42 pm »
***Build what you dig, bro. Build what you dig.***

Mike A

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Re: So ... 3d Printers....
« Reply #675 on: March 07, 2018, 08:04:43 pm »
Cookie press?

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Re: So ... 3d Printers....
« Reply #676 on: March 07, 2018, 08:54:59 pm »
Cookie press?

Yup yup!! For the ZapCon after party!
***Build what you dig, bro. Build what you dig.***

Mike A

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Re: So ... 3d Printers....
« Reply #677 on: March 20, 2018, 06:15:18 am »
Just thought I would post this here.

https://hackaday.com/2018/03/18/3d-printer-halts-and-catches-fire-analysis-finds-a-surprising-culprit/

As 3D printers get cheaper and are more commonplace, people have a tendency to let their guard down. 3D printers need to be inspected regularly, and leaving them unattended while they work a job poses a certain level of risk.

I am not denigrating cheap 3D printers. They seem really useful. They just need to be treated with a higher level of caution than many other tools. Especially the really cheap ones.

When I run my lasers for work, I stay in the room with them. I moved a computer into that room and routed a network connection so I can work and man the fire extinguisher if necessary. :cheers:

Titchgamer

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Re: So ... 3d Printers....
« Reply #678 on: March 20, 2018, 08:31:12 am »
Just thought I would post this here.

https://hackaday.com/2018/03/18/3d-printer-halts-and-catches-fire-analysis-finds-a-surprising-culprit/

As 3D printers get cheaper and are more commonplace, people have a tendency to let their guard down. 3D printers need to be inspected regularly, and leaving them unattended while they work a job poses a certain level of risk.

I am not denigrating cheap 3D printers. They seem really useful. They just need to be treated with a higher level of caution than many other tools. Especially the really cheap ones.

When I run my lasers for work, I stay in the room with them. I moved a computer into that room and routed a network connection so I can work and man the fire extinguisher if necessary. :cheers:

I never leave the house when mine is running.
I have octopi with a web cam set up and monitor it from that via my laptop.
I do intend to buy a small smoke detector as well just to mount near the printer as a early warning rather than relying on my main detectors.

pbj

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Re: So ... 3d Printers....
« Reply #679 on: March 20, 2018, 10:04:14 am »
Cash in hand for a dickbutt cookie cutter.  Not even joking.