First layer not adhering to raft - can anyone help? - 3D Printing

I’ve been happily printing for a while now with my Wanhao Duplicator i3 using PLA but a recent problem has occurred wherein, during the initial stages of a print with a large base surface area, the first layer has not stuck to the raft. This produces a surface effect similar to the gills of a fish, where, in one direction, the surface bows and parts of the filament stick up proud of the raft about 3mm high, forming raised ridges open on one side, at regular intervals. This obviously greatly int

3D Printing Supports: Rafts, Skirts, and Brims : My Crazy Good Life

Supports touching build plate starting on layer #2 · Issue #15388

What Is a Raft in 3D Printing and Why Is There a Need to Use One

3D Printing Model Common Issues & Solutions

5 Simple Steps to a Perfect First Layer

PLA Not Sticking to Bed: 6 Simple Solutions

raft problems - 3D Printing / 3D Printers - Talk Manufacturing

3D Print Not Sticking to Bed: 6 Easy Solutions

Resin 3D printing raft: what you need to know

Basic Settings Solidoodle Tips