What is the recommended temperature range for heat gun?
 
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What is the recommended temperature range for heat gun?  

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prusanewuser
(@prusanewuser)
Prominent Member
What is the recommended temperature range for heat gun?

Hi, sometimes I need to sand off corners, edges or part of surfaces to touch up the finished prints. However, doing so changed the color of the sanded part. Tried to use a soldering iron but it did not work. Is a heat gun the best tool to recover the original color? What minimum temperature should I be looking at? 40c or 50c? 

Posted : 09/09/2021 3:03 am
cwbullet
(@cwbullet)
Member
Heat gun

A heat gun will work.  I have also used acetone baths on ABS.  

Posted by: @prusanewuser

Hi, sometimes I need to sand off corners, edges or part of surfaces to touch up the finished prints. However, doing so changed the color of the sanded part. Tried to use a soldering iron but it did not work. Is a heat gun the best tool to recover the original color? What minimum temperature should I be looking at? 40c or 50c? 

 

--------------------
Chuck H
3D Printer Review Blog

Posted : 09/09/2021 9:57 am
Diem
 Diem
(@diem)
Illustrious Member

It depends on the filament.  Look up the glass temperature, you need to get just over that without melting the bulk.

Cheerio,

Posted : 09/09/2021 3:44 pm
cwbullet
(@cwbullet)
Member
Distance

Or one that is adjustable.  Mine does what too hot, but I use distance to insulate the temperature.  

Posted by: @diem

It depends on the filament.  Look up the glass temperature, you need to get just over that without melting the bulk.

Cheerio,

 

--------------------
Chuck H
3D Printer Review Blog

Posted : 09/09/2021 3:46 pm
RedDawg
(@reddawg)
Reputable Member

The success of using a heat gun approach is HIGHLY dependent on the geometry of the part, where the sanding discoloration occurs on the part and the proximity of other, smaller cross-section elements near or adjacent to the area being treated, so no generalized answer will cover all situations. If the print is in a darker filament and the sanding has caused (typlically) lighter edges or areas, I have had success rubbing or burnishing the affected areas with a light grease or mineral oil and wiping with an absorbent cloth to remove any excess agent. YMMV.

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Posted : 09/09/2021 9:50 pm
prusanewuser
(@prusanewuser)
Prominent Member
Topic starter answered:
RE: What is the recommended temperature range for heat gun?

Can rubbing with light grease or mineral oil return the prints to its normal colors permanently? I tried oil used for cooking on a print made with darker filament. The color looked recovered the instant I applied oil on it. However, after I rubbed it with a paper towel as I don't want oily greasy prints, it returned to discoloration stage. Is there a permanent solution? 

Posted : 10/09/2021 8:46 pm
RedDawg
(@reddawg)
Reputable Member
.

In my experience it has been permanent, however, I have not experimented with all colors and filament types. It could be helpful if you can post a picture(s) showing your specific issues. 

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Posted : 11/09/2021 1:55 am
jameslandry
(@jameslandry)
New Member
RE: What is the recommended temperature range for heat gun?

Wagner Spraytech has been a worth-it small heat gun for electronics so far for hard-to-reach exteriors. The narrow nozzle enables it to concentrate on tight spaces or small, focused heat utilizations. I’m satisfied with how much abuse it can take.

Posted : 27/02/2022 7:49 am
HexDriver liked
René
(@rene-3)
Reputable Member
RE: What is the recommended temperature range for heat gun?

What kind of filament are you talking about?

Posted : 27/10/2022 2:01 pm
prusanewuser
(@prusanewuser)
Prominent Member
Topic starter answered:
RE: What is the recommended temperature range for heat gun?

 

Posted by: @rene-4

What kind of filament are you talking about?

PLA

Posted : 27/10/2022 4:44 pm
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