John Colborn

  • Total activity 12
  • Last activity
  • Member since
  • Following 0 users
  • Followed by 0 users
  • Votes 0
  • Subscriptions 5

Activity overview

Latest activity by John Colborn
  • John Colborn commented,

    Was there an issue or difference with the filament drive mechanism or drive nut (the toothed-wheel which is meant to grip the filament as it is pushed in)?  Different clamping force on the toothed-...

  • John Colborn commented,

    Seems like the layers nearest the bed are influenced by bed heating moreso than subsequent/higher layers.  If poor quality occurs near the bed then it infers we'd need to reduce the rate of deposit...

  • John Colborn commented,

    The part on the left looks slightly over-extruded. With two different machines, there would be two different extruder nozzles and two different spools of raw material.   Both of these typically nee...

  • John Colborn commented,

    Couple guesses for consideration:   I have had filament quality change mid-spool.   Filament diameter, contamination, or dryness may have changed during the latter-part of the spool.  Filament diam...

  • John Colborn commented,

    For this material, I think that the color or degree of transparency is related to the temperature of the base layer related to the temperature of the subsequent layer deposited.   Where the extrusi...

  • John Colborn commented,

    Here are some ideas:   H1: Tool head gantry rigidity and/or runout in the linear guides allows the extruder tip to have play in the problematic axis (Y, is it?); possibly exacerbated by forces on t...

  • John Colborn commented,

    Right-side print added: - cooling fan - dried filament/raw material - reduced extrusion rate, or - cooler extrusion temperature   Are any of these correct?