Monday, April 14, 2014

Lathe body - epoxy + profiles

Hi,

I had to sell my lathe some time ago. I had no choice but I think that it was big mistake. This is one of most important tool in workshop, when you like to build something more complicated.
So I have to get one in my shop back. I can not afford to buy new one. I am afraid to buy used one, not to get junk. So why not to try build one.

I have some spare 45 x 90 mm profiles, 1000 mm length. And a lot of smaller parts.
From my friend Jarek I have 4 kg of epoxy resin and hardener. It is a little bit old and I have to use more hardener that was in original recipe. Sand is no problem.

I decided to use mix 20% of epoxy and rest of sand. I would like to have profiles filled up very precise.

 top
and bottom of profile after filling up with mix. 


Next I cut some parts to create body of lathe.

And screw them together. Bottom of mold is made from chipboard. Left and right side id closed with MDF. All part that I do not like to connect to body are separated with stretch foil.




I put mold on my vibrating table (described some time ago) and start to fill with mix. You can see a lot of bubbles that are coming out of it.

When reaction started mold was hot (about 70 Celsius degrees). I had to sprinkle  pure sand on the top of the mix. I was afraid of auto-ignition.



After one day I removed MDF and chipboard. I received this nice looking part.

I do not know if this part can be a part of lathe. I hope so.

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