Bosch 4100 fence alignment: check before upgrading

Describe the problem precisely

Use the documented checks

The Bosch 4100/4100DG manual includes an adjustments section. Use the procedure for your exact model; this article is a decision guide rather than an abbreviated replacement for that procedure. Disconnect the saw before adjustments as instructed.

Write down what you measured, where you measured it, and the condition of the setup. Change one relevant variable at a time so you can tell whether it helped. A more expensive measuring instrument is not useful if the comparison itself is inconsistent.

What the original owner found

The original Timber & Tools review reported a fence that locked securely and worked well after adjustment. That is useful context: a new fence was not the owner’s first recommendation. It does not establish the condition of a different saw years later.

Read the original ownership assessment for the broader trade-offs.

When to consider another solution

If the components cannot hold their intended position or something is damaged, resolve the condition issue. If the setup checks out but your workflow requires a capability it cannot provide, evaluate alternatives on that specific need.

For crosscuts, compare a sled and miter gauge. For a larger purchase, use the upgrade decision guide. This page does not claim a measured before-and-after improvement or endorse an unverified replacement fence.