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Extruder Gun advice

post #1 of 10
Thread Starter 

Hey,

Picked up an extruder gun.  It works really well.  My question is how to get the material off the based with out pulling the base weld out.  I have been having a hell of a time getting the extra material out.

 

Ive been using super sharp metal scraper, was thinking about picking up a surform from the hardware store.

 

Any suggestions would be appreciated.

post #2 of 10

How well did you prep the area before?  E.g. base cleaner to remove wax, rough up with sand paper, etc?  Also how long did you let the weld setup and cure?

 

If all was done well, then better to "scrape" from middle of the weld outwards, don't try to get it all off at once (baby steps is better).  Then once flattened nicely, you can finish with more conventional scrape direction.

post #3 of 10
Quote:
Originally Posted by hbear View Post
 

How well did you prep the area before?  E.g. base cleaner to remove wax, rough up with sand paper, etc?  Also how long did you let the weld setup and cure?

 

If all was done well, then better to "scrape" from middle of the weld outwards, don't try to get it all off at once (baby steps is better).  Then once flattened nicely, you can finish with more conventional scrape direction.


I second this.  Everything he said above.  I use a wood burner and dial it down to about 400F.  I don't like how the extruder's  heat up way more base than needed.  More blocked base is what you end up with.  That said you need to use what you have. 

Personally, I never repair a base unless it is absolutely needed.   Small scratches...no big deal.  Save the base repair for major gouges and core shots only.

Also if it is a core or at the edge you need to prime the repair with metal grip first! 

post #4 of 10

This works like a charm!

 

 

 

 

 

post #5 of 10
Thread Starter 
Quote:
Originally Posted by Jacques View Post


I second this.  Everything he said above.  I use a wood burner and dial it down to about 400F.  I don't like how the extruder's  heat up way more base than needed.  More blocked base is what you end up with.  That said you need to use what you have. 
Personally, I never repair a base unless it is absolutely needed.   Small scratches...no big deal.  Save the base repair for major gouges and core shots only.
Also if it is a core or at the edge you need to prime the repair with metal grip first! 
Quote:
Originally Posted by Jacques View Post


I second this.  Everything he said above.  I use a wood burner and dial it down to about 400F.  I don't like how the extruder's  heat up way more base than needed.  More blocked base is what you end up with.  That said you need to use what you have. 
Personally, I never repair a base unless it is absolutely needed.   Small scratches...no big deal.  Save the base repair for major gouges and core shots only.
Also if it is a core or at the edge you need to prime the repair with metal grip first! 

What's a metal grip. Yes prepped with base cleaner and used 220 to rough it up
post #6 of 10
What type of extruder?
post #7 of 10

Metal Grip is available from all the race supply places.

Use it before you fill a core shot to improve adhesion.

post #8 of 10
Thread Starter 
Quote:
Originally Posted by Atomicman View Post

This works like a charm!








What's is this ? You have a name for it?
post #9 of 10
Quote:
Originally Posted by skideeppow View Post
 
Quote:
Originally Posted by Jacques View Post


I second this.  Everything he said above.  I use a wood burner and dial it down to about 400F.  I don't like how the extruder's  heat up way more base than needed.  More blocked base is what you end up with.  That said you need to use what you have. 
Personally, I never repair a base unless it is absolutely needed.   Small scratches...no big deal.  Save the base repair for major gouges and core shots only.
Also if it is a core or at the edge you need to prime the repair with metal grip first! 
Quote:
Originally Posted by Jacques View Post


I second this.  Everything he said above.  I use a wood burner and dial it down to about 400F.  I don't like how the extruder's  heat up way more base than needed.  More blocked base is what you end up with.  That said you need to use what you have. 
Personally, I never repair a base unless it is absolutely needed.   Small scratches...no big deal.  Save the base repair for major gouges and core shots only.
Also if it is a core or at the edge you need to prime the repair with metal grip first! 

What's a metal grip. Yes prepped with base cleaner and used 220 to rough it up


It is P-Tex wire mixed with epoxy.  It's harder than regular wire.  Just prime the repair with that, then finish with regular wire.  Not sure how you can do that with an extruder.  You could just do the whole repair with it, but it's a bit harder to scrape smooth, but can be done.  It makes a very durable repair. 

post #10 of 10
Quote:
Originally Posted by skideeppow View Post

What's is this ? You have a name for it?
it is a big flat panzer file setup so it can held flat against the base. Made by fk/SKS
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