r/CNC
Founded October 2009 · Public — anyone can post
For anything CNC related: CAD, CAM, automation, and more!
Members
124,177
124K
Online now
—
not captured in the last snapshot
Posts per day
5.3
from the last 100 posts, spanning 18.6 days
Comments per post
—
no sample yet
Growth · 7d
—
not enough history yet
Growth · 30d
—
not enough history yet
Promo tolerance
—
not assessed yet
Last post
Sep 17
sampled Sep 18
Distinct posters
92%
of the last 100 posts
Tracking since Sep 18 · growth spans are the real distance between snapshots, not rounded windows. Posts/day is measured from the community’s own newest posts on Reddit, not from what Prowlo happens to crawl.
Member growth
Tracking since Sep 18 — growth charts appear after a week of history.
Similar by content
Communities that discuss what r/CNC discusses.
FreeCAD on Reddit: a community dedicated to the open-source, extensible & scriptable parametric 3D CAD/CAM/FEM modeler.
A community for those that practice the broad discipline of mechanical engineering.
/r/3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The gathering place for mechanical engineers to discuss current technology, methods, jobs, and anything else related to mechanical engineering.
See the full lists on similar subreddits.
r/CNC — frequently asked
How many members does r/CNC have?
r/CNC has 124,177 members as of our most recent crawl on Sep 18. Prowlo re-checks tracked communities on a rolling schedule, so this figure moves rather than sitting frozen at whatever it was when a scraper last ran.
Is r/CNC growing?
We don't have 30 days of snapshot history for r/CNC yet, so we're not going to invent a growth number. We've been tracking it since Sep 18; the chart fills in as history accumulates.
How active is r/CNC?
Around 5.3 posts per day, measured from the newest 100 posts on Reddit, which span 18.6 days. Posting rate matters more than subscriber count when you're deciding where to spend your time — it determines how long your comment stays visible.
When was r/CNC created?
r/CNC was founded in October 2009 and is a public — anyone can post community. Age matters: an older community with steady growth has survived Reddit's moderation churn; a young one with a spike may not.
Who posts in r/CNC?
Of the last 100 posts we sampled, 92% came from distinct accounts; the newest was published Sep 17. A low share means a feed dominated by a handful of accounts (bots, mods, or one prolific poster) rather than a community.
Can I promote my product in r/CNC?
We don't have a promo-tolerance read for r/CNC yet. Default to the safe approach: read the sidebar rules, contribute in threads where you gain nothing, and mention your product only when it is the honest answer to someone's question.
How do I monitor r/CNC for mentions?
Hit Watch on this page. Prowlo starts crawling r/CNC into your Dataset — every new post indexed and embedded, searchable semantically, queryable by your AI agent over MCP, and able to trigger keyword alerts in Slack. Prowlo is read-only; it never posts on your behalf.
Can my AI agent read r/CNC's stats?
Yes. Everything on this page is one MCP tool call away: catalog_get_subreddit returns r/CNC's members, growth, promo tolerance and similar communities as typed JSON — free, no credits. Connect your agent to api.prowlo.com/mcp and it can vet the community and start watching it in the same conversation.
Read-only · Human-in-the-loop
Prowlo never posts for you
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