How are large turned columns constructed?

Large turned columns (over 300 mm diameter) are constructed from glued laminated blanks. The process involves: selecting and kiln-drying boards to 10–12% MC, planing to uniform thickness, applying structural adhesive (MUF or PUR), pressing in hydraulic clamps to form a square or octagonal blank, curing for 24+ hours, rough-turning to cylindrical form, seasoning/stabilising for 2–4 weeks, then finish-turning to final profile.

Large turned columns (over 300 mm diameter) are constructed from glued laminated blanks. The process involves: selecting and kiln-drying boards to 10–12% MC, planing to uniform thickness, applying structural adhesive (MUF or PUR), pressing in hydraulic clamps to form a square or octagonal blank, curing for 24+ hours, rough-turning to cylindrical form, seasoning/stabilising for 2–4 weeks, then finish-turning to final profile. The lamination joints are visible on the finished surface as fine lines — for premium work, laminations are arranged to minimise visual impact or the column is subsequently wrapped in veneer.

Why this matters

This question relates to Turned Timber Elements: Columns, Balusters & Decorative Details, which covers the broader topic in detail. Understanding this specific aspect helps architects, builders, and timber dealers make informed specification decisions.

For full context and additional technical detail, see our comprehensive guide:

→ Turned Timber Elements: Columns, Balusters & Decorative Details

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About this answer

This answer is part of the PuurModulair Knowledge Base — comprehensive timber specification guidance for architects, builders, and dealers across the UK, EU, and Scandinavia. All technical content is reviewed by qualified timber technologists before publication.