Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  
joatrash

excess brim material at print start?

Recommended Posts

My UM2 extrudes about 3cm of filament while the build platform is being raised to start a print. This filament sometimes ends up right smack in the middle of the build area so that i have to quickly try and remove it while the prim is being printed. Is there a setting somewhere where I can delay extrusion a little?

 

Share this post


Link to post
Share on other sites

When using the UltiGCode flavour of GCode the firmware takes care of the startup procedure, so you can't change that unless you want to hack your own version of the firmware.

You can switch to the RepRap flavour which will give you the option to put in your own start and end GCode. This will override all material settings on the printer and you'll have to manage those settings from cura instead.

Or you could do what I do and just grab the filament when it first comes out with tweezers and hold it to the side until the actual print starts.

 

Share this post


Link to post
Share on other sites

Tweezers are for wimps. Use your fingers.

I pull it towards the front left corner and lay the thin filament onto the hot glass and press it down a little into the glass at the edge so it behaves and doesn't get caught up in the moving print head.

 

Share this post


Link to post
Share on other sites

Personally I'm not too fond of grabbing the nozzle directly to get at the PLA when it curls up.

 

Just be quick. I have done it hundreds of times and haven't gotten burned yet - no blisters. I'm also the kind of person who will pick up a red hot burning log from the fire and throw it in a new spot. But I do it very fast and brush off any possible hot coals off my fingers before checking if it's even necessary (by the time you check it's too late). I also plan the movement in my head 3 times before actually doing it.

Soldering irons are much hotter I think. I've gotten burned by them many times.

 

Share this post


Link to post
Share on other sites

If it catches on the nozzle and creates a loop I like to try and put the screwdriver through the loop (needs some skill) and then squash it as the nozzle comes into "contact" with the bed. An accomplished flick of the wrist takes it off the bed.

Of course failure during the preceding means you then have to scurry after the nozzle with your screwdriver cleaning up the mess :)

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Our picks

    • How to 3D print with reinforced engineering materials
      Ultimaker is hosting a webinar where we explain how you can achieve and maintain a high print success rate using these new reinforced engineering materials. Learn from Ultimaker's Product Manager of Materials and top chemical engineer Bart van As how you can take your 3D printing to that next level.
      • 2 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!