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Messages - wild.bill

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1
General Discussion / Re: 3d Printer
« on: February 18, 2017, 10:00:38 PM »
You can replace the MOSFET on the RAMPS board, I have a pile of parts but just have not gotten around to making the fix yet.

The best way to test is have the RAMPS board ask for heat from the hotbed and use a volt meter to measure to see if you are getting any voltage on the connector.

For where its located, if you look at the edge of the RAMPS board you will see the connector for D8, D8, D10 and just behind the connector are 3 MOSFETS with 2 in line with the length of the board and 1 sideways near D8, the one near D8 is the one for the bad.

Attached is a picture with the MOSFET removed - that is for the bed.


2
General Discussion / Re: 3d Printer
« on: February 18, 2017, 08:33:48 PM »
I have the FolgerTech i3 Prusa...while they are a US company, I'm sure they buy their kits from China. I've had it about a year now and it has worked perfectly until last week when my hot bed stopped getting hot. I have to still trouble shoot what is wrong and fix it. Probably a loose wire although I think I did a good solder job when attaching the wires. Maybe the hot bed went bad in which case I'll just buy a new one.

https://folgertech.com/products/folger-tech-reprap-prusa-i3-clear-frame-full-3d-printer-kit-ramps-gt2

Folger makes the kit themself, but most of the parts do come from China.
For the heated bed the most often point of failure is the MOSFET. I have 3 RAMPS boards with smoked MOSFET's. The 4th one I use to drive a relay that takes the load for the hotbed so I would not smoke another MOSFET.

3
Projects / Re: Text engraving on 3/8 thick clear acrylic
« on: February 14, 2017, 07:49:49 AM »
I have some 6" medium tack transfer tape I use for vinyl graphics/stickers.
Will this work? I may try some it comes in lots of different widths
I don't have that material so I have never tried it, but give it a try and show us how it works.

4
General Discussion / Re: Link for better same spec wheels?
« on: February 14, 2017, 07:45:06 AM »
Thanks. Where did you get the ecentrics?
This is where my supply comes from http://openbuildspartstore.com/eccentric-spacer/

5
General Discussion / Re: Looking at buying a 3D printer. Opinions Welcome.
« on: February 13, 2017, 11:11:23 AM »
It's funny. The two printers I am looking at are the ones the Ralph and Zax have. I just want to treat this like a boxing match. "In this corner ....."

Or like 3D combat "FIGHT!" ;D
I can break the tie, I have 2 of the Folger 2020 i3's, one all original and one with so many mod's there is almost nothing other than the frame that is original, and a Folger FT-5.
One thing about building a kit is you learn the details of how it works. Like the laser's things break and its good to know how to fix them.


6
General Discussion / Re: Link for better same spec wheels?
« on: February 12, 2017, 05:46:29 PM »
exactly the Eccentric Spacers setups
They work very well, I have on on a 2080 beam for the Y axis on one of my i3's.

7
General Discussion / Re: Link for better same spec wheels?
« on: February 12, 2017, 05:38:04 PM »
What we need is tight fitting axles with ecentric cam action. I have a machinist friend who is willing to make a prototype.

Something like this Gantry Set? http://openbuildspartstore.com/v-slot-gantry-set/

8
T2 Engraving / Re: Rehome before completion ?
« on: February 12, 2017, 10:12:43 AM »
What's a VCR  :o
Like I said before - I am old - and yes I still have working VCR's

9
T2 Engraving / Re: Rehome before completion ?
« on: February 12, 2017, 07:24:30 AM »
The workpiece home isn't reset until the job finishes so unless you are using lower left start it will be erratic. Machine home would always be correct, as would the preset positions if using machine home as reference.

I added the stop button to my "to do" list, but I may be able to find a more elegant solution and fix the pause/home issue.
If you do make a change (not saying you should) make it like a VCR control, play, pause, stop with the normal symbols.

10
General Discussion / Re: Test pattern
« on: February 10, 2017, 05:59:35 PM »
On slate the text and major lines are ok. The eyes, eye brows, mouth, computer keyboard are very poor. Attached is photo of etching on Neon cardstock.

I love it ...

11
General Discussion / Re: Did some make a Holder for laser stl ???
« on: February 09, 2017, 07:37:47 AM »
Here is a picture of it in use.

12
General Discussion / Re: Did some make a Holder for laser stl ???
« on: February 09, 2017, 07:35:15 AM »
Here is one that I made so I could change laser's without taking the gantry apart. This is a real simple design.

13
Assembly Help / Re: Wiring home switches
« on: February 07, 2017, 09:02:26 PM »
ok so i got the homing switches wired and it homes just fine but homing is backward from jog movements.  IE it thing its moving toward 0,0 and its actually moving the opposite direction.  So to fix this i can reverse the x and y axis but then after i home if i go to jog it jogs the wrong way.  So if I go +X it moves in the -X direction exactly opposite of the homing direction.  So per gallant I need to reverse my homing $23 but I dont actually know how to do that.  Any advice?
Did you build your own GRBL software or use something already built? I did my switches the other day and found the same thing, then in the GRBL code I found a line to uncomment that makes the switch positions the machine origin. After that the left front is 0,0 which is where the switches are.

14
General Questions / Re: Laser stability problems on Banggood A5 2500mw
« on: February 07, 2017, 08:53:16 PM »
@wild.bill - Are you usually very mild mannered with a slightly wild teenage son?

I am actually another old guy - that is really to old to be wild any more (hurts to much) but there are still some lingering patterns that still pop up once in a while.

15
General Questions / Re: Laser stability problems on Banggood A5 2500mw
« on: February 07, 2017, 08:07:47 PM »
 :)

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