My little work shop

A

Andreas

Aluminum

Joined

Mar 4, 2006

Location

UPPSALA SWEDEN

• Mar 8, 2009

• #1

Finally made it I put together a few pictures from my Fire Hose Washing Machine shop. we make all parts ourselves from mostly SS. It includes some precision work, a lot of welding, buying stuff, electronics (what I am best at). Our machines can be viewed here.

http://s618.photobucket.com/albums/tt262/AndreasWahlberg/?action=view&current=DSC_0488-1.jpg

The machines are

Deckel FP3NC
Hembrug S01
SOMATEC Vertical bandsaw 8" x 12"
H&H VDF 20" x 60" precision lathe.
Homemade TIG welder 120A
Kemppi 250A Mig
Beltgrinder
Toolgrinder, only used for big drills.

Feel free to comment. I got a sharp tongue and a good sence of humor.


Andreas Wahlberg

 

Ox

Diamond

Joined

Aug 27, 2002

Location

Northwest Ohio

• Mar 8, 2009

• #2

WOW!

That tailstock has some quill travel!


------------

Think Snow Eh!
Ox

 

mendoje1

Hot Rolled

Joined

Jul 30, 2003

Location

Los Angeles, California

• Mar 8, 2009

• #3

Neat! I'd like to hear more about the "Homemade TIG welder".
Thanks!
Jeff
Los Angeles, California

 

A

Andreas

Aluminum

Joined

Mar 4, 2006

Location

UPPSALA SWEDEN

• Mar 9, 2009

• #4

Homemade TIG welder

I was given an inverter "rodwelder" that had blown up. Two new transistors fixed that.
To make a TIG welder one needs HF ignition. I made it from transistor flyback inverter elevating
24VDC to 600V DC that charges a 0.33uf capacitor. An IGBT discharges this cap through
just one turn on a ETD 59 ferrite core. Weld current passes through 10 turns of 3x6mm copper wire. No interference with radios. It makes a very fast spark 2us, but it works.
I have schematics, for those interested.


Andreas

 

A

AlleyCat

Cast Iron

Joined

Jul 6, 2006

Location

Missouri

• Mar 9, 2009

• #5

I'm also interested in your homemade tig welder and would like to see the schematic for the HF ignition system. That's a nice looking shop you have. Thanks for sharing the photos.

 

A

Andreas

Aluminum

Joined

Mar 4, 2006

Location

UPPSALA SWEDEN

• Mar 9, 2009

• #6

Tig Hf

This is my first draft, exact values was determined by experiment.
I can get them. Study just the HF part the rest is not done yet.
I had to zip the pdf it didn't get much smaller but the forum accepts bigger zip s
than pdf s, why ?????
I only have the right values in the welder, could check them.
It is really important to isolate the transformer, nasty voltages at these low rise times
makes sparking easy. I vacuum potted the transformer in epoxi, and had to isolate the pot
from chassis with PTFE foil. Now it works, giving ca 5mm sparks in air, 15 mm in Ar.
Anyway it works nicely.


Andreas

 

Attachments

• TIGHF.zip

  52.4 KB · Views: 210

A

Alan123

Aluminum

Joined

Dec 16, 2006

Location

Phila. Pa

• Mar 21, 2009

• #7

small shop

This is a job for a pharmaceutical co 540 trays to modified. The rails were all wrong from another co. I`m in the white shirt and the other two are good friends father and son
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Steve@Reliance

Hot Rolled

Joined

Dec 27, 2006

Location

Milton Ontario Canada

• Mar 21, 2009

• #8

I'm not seein the pics.

 

U

uhmgawa

Plastic

Joined

Jan 9, 2008

Location

NH

• Mar 27, 2009

• #9

Andreas said:

I made it from transistor flyback inverter elevating
24VDC to 600V DC that charges a 0.33uf capacitor. An IGBT discharges this cap through
just one turn on a ETD 59 ferrite core. Weld current passes through 10 turns of 3x6mm copper wire. No interference with radios. It makes a very fast spark 2us, but it works.
I have schematics, for those interested.

Click to expand...

What is the repetition rate for the 2uS HV pulse?
It appears the 40KHz boost converter charges
C5 until the R2/R6 voltage divider elevates the
base of Q3 to ~7V. Curious what the recharge
time is for C5 in your prototype.

Also ~24V is a little high to drive an IGBT gate.
Did you actually need that level or was it just
available and didn't cause breakdown in practice?

Thanks!

 

yoyo

Hot Rolled

Joined

Oct 5, 2004

Location

netherlands

• Mar 28, 2009

• #10

Andreas
Interesting welder conversion. I get a 'corrupted file' message when I try to open the zip file.
Could you please post it again ? (perhaps unzipped)

 

U

uhmgawa

Plastic

Joined

Jan 9, 2008

Location

NH

• Mar 29, 2009

• #11

yoyo said:

Andreas
I get a 'corrupted file' message when I try to open the zip file.
Could you please post it again ? (perhaps unzipped)

Click to expand...

Actually it isn't a zip archive but rather a pdf file
named as though it was a zip.

This and similar sites enforce unequal file size limits
for pdfs (~20KB) vs. zip (~100KB) even though pdf files
are natively compressed formats.

Just rename if to a .pdf suffix and open it with your pdf
reader.