Reaction Training Ball V1.0

Reaction Ball - 3D Printable Training Ball

Train like a pro without the pro price tag. This reaction ball is purpose-built for agility training, hand-eye coordination, and goalie reaction drills. Print it once in PEBA 90A and you'll have a training tool that outperforms foam balls that cost $15-30 and fall apart after a few months.

Why This Works

Unlike cheap foam reaction balls that lose their bounce and tear easily, this 3D-printed design uses high-rebound PEBA material with a tunable shell structure. Adjust the infill to dial in exactly the bounce characteristics you need - from unpredictable ricochet for agility work to controlled rebounds for precision drills.

Perfect for:

• Hockey goalie reaction training
• Agility and coordination drills
• Physical therapy and rehab exercises
• Any sport requiring quick hands and reflexes

Material: SainSmart PEBA 90A

PEBA delivers 70-78% rebound energy return with excellent durability and impact resistance. It won't crack like TPU or lose bounce like foam.

CRITICAL: Dry your filament!

• Temperature: 65-80°C for 8+ hours
• PEBA absorbs moisture fast - print from dry box if possible

Tune Your Bounce

Dial in performance by adjusting infill percentage:

15% Gyroid

• ~75-80% rebound height
• Lightest weight (~70-80g)
• Most unpredictable patterns
• Best for agility/reaction training

25% Gyroid (Balanced)

• ~65-70% rebound
• ~85-95g
• Good unpredictability with some consistency
• Best all-around option

35% Gyroid (Controlled)

• ~55-60% rebound
• ~100-115g
• More predictable bounce
• Best for precision drills

40%+ (Heavy)

• ~45-50% rebound
• 120g+
• Very controlled, minimal ricochet
• Best for rehab/therapy work

TPU Use

TPU is more dampening than PEBA. Due to this, PEBA performs better as a reaction ball. If you want something that is more damp and you cannot adjust the infill to get the desired amount of dampness, TPU may be a better option in that case.