From 96cb2d6ad98245f7c62e031a40eee09164fefbff Mon Sep 17 00:00:00 2001 From: Akseli Uunila <akseli.uunila@gmail.com> Date: Thu, 9 Feb 2023 15:25:10 +0200 Subject: [PATCH] Edit group documentation --- docs/group_assignments/group2/assignment3.md | 26 +++++++------------- 1 file changed, 9 insertions(+), 17 deletions(-) diff --git a/docs/group_assignments/group2/assignment3.md b/docs/group_assignments/group2/assignment3.md index f5ed231..9a2d484 100644 --- a/docs/group_assignments/group2/assignment3.md +++ b/docs/group_assignments/group2/assignment3.md @@ -15,16 +15,19 @@ authors: ## Cutting a test piece and measuring the dimensions +First we laser cut a 20.0mm x 20.0mm square. However, closer inspection reveals that is not what we get: +    drawing: -20x20 +20.0 mm x 20.0 mm measurements: -19.77x19.87 -thickness 2.85 +19.77 mm x 19.87 mm x 2.85 mm + +From this we can calculate the kerf. It is the theoretical width - measured width, which for this material was **0.18mm**. ## Testing to change the focus of the laser cutter @@ -34,23 +37,12 @@ The results are shown in the Figure 1. We first used settings for MDF material b actually HDF, and we changed the settings. As can be seen from Figure 1, the difference...  +Figure: HDF setting used for above and MDF below (both materials are HDF)  +Figure: Varying focus height - - -Figure 1 - - - -Table -Focused -1 mm above -1 mm below -4 mm above did not cut out -4 mm below - -Others were cut through but not the 4 mm above +We can see that going too far with the focus causes excess burning. Even still, others were cut through but not the 4 mm above. Maybe the next figure explains why:  Schematic figure -- GitLab