PFAFF 335 project

[DanishMan]

Hi Jimi

Yes I did

 

[jimi]

[DanishMan]

Yesterday, I spent the entire day on the  PFAFF 335

I have never painted a sewing machine before, so I am still in the learning phase.

After grinding down the machine a couple of weeks ago, I primed it with Hammorite primer. The result was pretty good, and after sanding it with fine sandpaper the machine was smooth.  I then decided to use silver metal hammorite using a brush. The result was not good, as the layer became too thick.

I sanded the machine, and then sprayed it with black smooth Hammorite. The result was very good - or so I thought.

After leaving the machine for two weeks, I started working on it three days ago. I had to remove a two screws, that had accidentally been painted over, and the surrounding paint came off in small flakes. When I sanded the machine before the black paint, I also partly removed the primer.

Now what to do??? I saw no other way, than to start all over again.

It too almost three hours to remove all the pain - using a bench grinder, a drilling machine with a steel brush, and a dremel with a milling drill.

Before priming it i used a gas burner to remove water in the cast metal. Condensation is also a likely reason for paint not sticking properly.

Then priming it two times, and now ready for applying black paint again.

[Constabulary]

I`m always using rattle cans for painting machine castings

When ever possible I would leave on the old paint as long as there is not too much rust or the paint is badly flaking off. There is no better primer than the old sewing machine paint - especially the old black paint.

BTW - make sure you remove the paint from the contact areas between top and bottom fasting and so forth...

Edited April 6, 2020 by Constabulary

[dikman]

The last time I was silly enough to repaint a sewing machine I used a gel-type chemical paint stripper to remove the old paint. It took two or three applications in some areas but it worked great.

[iron1951]

I also have used paint stripper. Works well. I use steel wool with the stripper too. If you check my post "Oops I Broke It" 

https://leatherworker.net/forum/topic/89004-oops-i-broke-it/

I have pics of my stripped machine. I think fresh paint strips easier than old paint.

 

[DanishMan]

I am putting the newly painted 335 together again.

However, I encountered a problem. 

When taking the machine apart, I had to ruin the four main screws, as the were rediculously tight.

When try to use main screws - from a PFAFF 146, they do not fit.

Are there different main screws - with different  threads?

Kind regards

DanishMan

[shoepatcher]

Yes.  Different screws for different heads.  I hope they were a standard metric screw.

glenn

[DanishMan]

Hi Shoepatcher

I recently bought an old machine in Germany.

It was supposed to be an old 145, but it turned out to be a 142 - (there was only photo, that did not show the entire machine).

Now it turns out, that I can use many parts from this machine. Today I salvaged the main screws, which are a fraction smaller than on later machines. Also the screws attaching the stitch length mechanism, are of different size, than on later machines. I was puzzled, as my machine was originally green - but probably an early one. The ones from the black 142 also fitted my machine.

I encountered another  problem, that I was not able to solve..

The original main shaft was bend, and I replaced it with the main shaft from a newer 142, that I bought last year (for only 15 USD).  Everything went fine, until trying to fit the take up lever. The machine rotates smoothly until inserting the bolt into the take up lever. Then something goes wrong, and the take up lever causes too much friction. I tried to replace the bolt, the take up lever and even the main shaft. Same result every time.

Any suggestions to the nature of the problem?

Kind regards

DanishMan

D

[DanishMan]

By the way - it is not a bolt going into the take up lever - it is a pin.