Tamp it. Flip it. Dibber done.

This 2-in-1 tool is designed to make sowing into Charles Dowding 15-cell seed trays faster and more consistent than ever. The red tamper plate presses all 15 cells at once for perfectly firmed, level soil — then simply slide on the green dibber attachment and flip it over to create 15 perfectly spaced sowing holes in one press.
No more working cell by cell. No more uneven depths. Just two quick actions and your tray is ready to sow.
What's Included:

Red Tamper – fits the full 15-cell tray footprint for even soil firming across every cell simultaneously
Green Dibber Attachment – slides onto the tamper to create 15 uniform sowing holes in a single press

Both parts printed in PLA and designed to work as a matched pair.

The handle is separate and needs to be glued.
Small amounts of support is needed.
By CottageCADdesigns — designed and printed in the UK.

Charles Dowding 15-Cell Seed Tray Tamper & Dibber – 2-in-1 Speed Tool - No-Dig Gardening

CD Tamper X 15 - CD X15.stl

A full sowing toolkit precision-designed for Charles Dowding seed trays.

Description:
This is a complete functional toolkit for anyone using Charles Dowding seed trays (15-cell or 30-cell). Every piece has been designed to solve a real problem — inconsistent sowing depth, awkward tamping, fiddly plug removal — and printed in matte PLA for a clean, professional result.
Included in the set:

Standard tamper
5mm and 10mm dibber/tampers
3-cell speed tamper (works horizontally and vertically)
Plug-pusher handles integrated into each dibber
Measured dibber for large seeds
Multi-use spork
Space for a pencil for your labelling

Designed as a matched set — tools store neatly together and are sized precisely for the tray cells. 

There is a small amount of support necessary.
Handles are integrated but the 2 dibber parts need to be glued. 

Printed in matte PLA. A version for Huw Richards trays is also available.
Designed by CottageCADdesigns.

Charles Dowding Seed Tray Tool Kit – Dibber, Tamper, Spork & More

Charles Dowding Tamper Stand - Charles Dowding Tamper Stand 2.3mf

Charles Dowding Tamper Stand - Charles Dowding Tamper Stand.stl

CD Tamper X 3 - CD X3 Tamper.stl

CD Dibber - CD Tamper.stl

CD Dibber - 5mm.stl

CD Dibber - 10mm.stl

CD Tamper - CD Tamper.stl

Square Dibber - Square Dibber.stl

Spork Flat - Flat Spork.stl

A simple but genuinely useful gardening tool — a precision-sized seed tamper designed to give you consistent, even soil compaction every time you sow.
Why it works
Getting a flat, evenly compressed compost surface is one of those small things that makes a real difference to germination rates and seedling uniformity. This tamper fits neatly into 3–4" pots and gives you a clean, repeatable result without damaging pot edges or disturbing the compost structure below.
Key features

Sized for 3–4" (7.5–10.5cm) pots
Promotes even seed-to-soil contact for better germination
Comfortable conical handle for easy grip and pressure control
Single-part print — no assembly required
No supports needed
Standard settings: 0.2mm layer height, 15% infill, PLA or PETG
Prints quickly and uses minimal filament

Dimensions

Base diameter: ~65mm
Height: ~45mm

What's included

STL file
PDF with print and use guidance

Great for: seed starting, allotments, greenhouses, propagation trays, and anyone who likes their growing setup to be just that little bit more precise.
Personal use only. Not for resale without a commercial licence.

Round Seed Tamper for Pots – 3" to 4" 

RoundPotTamper.stl

The square version of the popular round pot seed tamper — designed specifically to fit small square pots and give you consistent, even compost compaction every time you sow.
Why it works
Round tampers don't reach the corners of square pots, leaving uneven soil and inconsistent seed contact. This tamper is sized to fit snugly into standard small square pots, compressing the compost evenly all the way to the edges for better germination and more uniform seedlings.
Key features

Precisely sized for standard small square pots
Ensures even soil compaction right into the corners
Comfortable conical handle for easy grip and pressure control
Single-part print — no assembly required
No supports needed
Standard settings: 0.2mm layer height, 15% infill, PLA or PETG
Prints quickly and uses minimal filament

Dimensions

Base: 65mm square
Height: 51mm

What's included

STL file

Great for: seed starting, module trays, allotments, greenhouses, and anyone who likes their growing setup to be just that little bit more precise.
Personal use only. Not for resale without a commercial licence.

Square Pot Seed Tamper – Soil & Compost Tool

SquareTamper.stl

Garden

Hi there, 
I have a lot of models to get on here so will be adding many more. They are mainly items for the house and garden. 
Enjoy
Simon

Welcome Plan

Thangs Bundle

30 years of design. CottageCADdesigns create practical, original, home and garden pieces. “To make life easier”.