Apple Core vs Half 6 Point Diamonds: Which EPP Shape to Pick
By Paper Pieces for English Paper Piecing | Published: 2026-10-15
Category: Comparisons
Curved Apple Core pieces and straight Half 6 Point Diamonds solve different piecing problems. Compare curve handling, seam options, and pack sizes to choose the right shape for your next EPP project.
Quick answer
Choose Apple Core pieces when you want curved seams and classic interlocking quilt designs; choose Half 6 Point Diamonds when you need straight-edged, repeatable shapes that are easier to baste and piece. Apple Core requires more careful curve basting, while Half 6 Point Diamonds offer faster assembly and more predictable results for beginners.
Curve control: what changes when you pick Apple Core
Apple Core pieces have two curved sides that nest together. That curve is the whole point: it creates the interlocking, wave-like pattern you see in traditional apple core quilts. But curves also mean you cannot simply line up straight edges and sew. You need to ease the fabric around the curve, which takes practice. If you are new to English paper piecing, start with a small pack to test your basting method before committing to a full quilt.
Straight edges and repeatable angles with Half 6 Point Diamonds
Half 6 Point Diamonds are straight-edged shapes with consistent angles. They are a subset of the classic 6-point diamond family, cut in half to give you more design flexibility. Because every edge is straight, you can chain-piece them quickly and get crisp points without wrestling with curves. They are ideal for star motifs, tumbling block variations, and any pattern where you want sharp geometric lines.
Seam and pack size options: what each shape offers
Both shapes come in multiple pack sizes and seam options, but the available combinations differ. Apple Core is offered in Small (30 pieces), Large (180 pieces), and Bulk (360 pieces) packs, with seam choices including No Seam, 1/4" Seam, 3/8" Seam, and windowed versions. Half 6 Point Diamonds come in Small (80 pieces), Large (480 pieces), and Bulk (960 pieces) packs, with seam options of 1/4" Seam, 3/8" Seam, No Seam, and windowed versions. The smaller piece count for Apple Core reflects its larger 4" size, while the 2" Half 6 Point Diamonds give you more pieces per pack for the same coverage.
Trade-offs at a glance
- Curved vs straight piecing: Apple Core requires basting and sewing along curves, which can be slower and less forgiving for beginners. Half 6 Point Diamonds have straight edges that align easily and piece together quickly. If you value speed and predictability, choose diamonds. If you want the classic apple core look, accept the curve challenge.
- Piece size and coverage: The 4" Apple Core covers more area per piece, so you need fewer pieces to finish a project. The 2" Half 6 Point Diamond is smaller, so you will piece more units for the same coverage, but you get more pieces per pack. For large quilts with fewer pieces, Apple Core is more efficient. For detailed designs with many small units, diamonds give you more flexibility.
- Seam and template options: Both shapes offer multiple seam allowances and windowed versions, but the exact combinations differ. Apple Core includes No Seam, 1/4", and 3/8" seams, while Half 6 Point Diamonds also include windowed options in both 1/4" and 3/8". Check the product options carefully to ensure you get the seam allowance that matches your basting style.
Product facts
- 4" Apple Core: 4" Apple Core shapes are made for English paper piecing and come in Small Pack (30 pieces), Large Pack (180 pieces), and Bulk Pack (360 pieces). Seam options include No Seam, 1/4" Seam, and 3/8" Seam, with windowed versions available. The 4" size means each piece covers more area, so you need fewer pieces for a quilt top. The range of seam options lets you match your preferred basting method, whether you like to fold over a seam allowance or work with no seam for a different technique.
- 2" Half 6 Point Diamonds: 2" Half 6 Point Diamonds are paper and acrylic pieces intended for English paper piecing. They come in Small Pack (80 pieces), Large Pack (480 pieces), and Bulk Pack (960 pieces). Seam options include 1/4" Seam, 3/8" Seam, No Seam, 1/4" Windowed, and 3/8" Windowed. The smaller 2" size and higher piece count per pack make these ideal for detailed designs and scrap-friendly projects. The variety of seam options supports both traditional basting and windowed techniques that let you fussy cut or center motifs.
- 4" Quarter 6 Point Diamonds: 4" Quarter 6 Point Diamonds are available as papers and acrylics, sold separately. Quantities and descriptions are selected via product options. If you need a larger diamond shape with straight edges, this option gives you a 4" size that can be combined with other 6-point diamonds for more complex geometric patterns.
- 7/8" Jewel: 7/8" Jewel shapes are available as papers and acrylic templates, sold separately. Quantities and descriptions are selected via product options. Jewel shapes are small and often used as accent pieces or in intricate designs. They are not a direct substitute for Apple Core or Half 6 Point Diamonds but can add variety to your EPP toolkit.
Which shape should you choose?
Best for
- Quilters who want the traditional interlocking apple core pattern and are comfortable with curved piecing
- Projects where larger pieces mean faster coverage, such as lap quilts or bed runners
- Makers who prefer a variety of seam options including no-seam basting
Not for
- Beginners who have not yet mastered curved seams and want a forgiving first project
- Patterns that rely on sharp, straight-edged geometric motifs like stars or hexagons
- Projects where you need many small pieces for intricate detail work
