Preliminary Presentation Team F1 Climbing Hold Resurfacer: Abdullah Alenezi Mohammad Almutairi Kyle Connelly Drew Shumway Dylan Simon
Project Description Purpose: Develop system to restore texture on used/worn out climbing holds Client: John Dsokicz of Flagstaff Climbing Center Figure 1: Climbing Hold 2 Dylan Figure 2: Flagstaff Climbing Center
Background & Benchmarking Climbing holds are traditionally made in two varieties: Figure 3: Climbing Hold 1) Polyurethane 2) A composite of polyester resin reinforced with fiberglass [3] When holds are overused, they become polished and slick. There is no commercial product in the climbing industry that can resurface used holds. Most climbing gyms discard their holds after they become polished. 3 Kyle
Customer Requirements 1) Climbing holds will gain usable texture while resembling original hold 2) Save money 3) Can recolor 4) Can be applied to majority of hold collection 5) Can be stored reasonably 4 Abdullah
Engineering Requirements 80% original texture (surface roughness 1.4 µm) [4] ● Cost of operation (< $5.00/hold) ● Size of device (< 2 m longest length) ● Structurally sound (< 8.8 kN tensile test) ● Limited waste (10 kg/year ~ ounce per day) ● durability (<500 holds) ● Color (visual color scale) ● 5 Drew
Designs Considered Texture Possibilities: Bedliner Spray ● Figure 4: Continuous Liquid Interface Production Acrylic paint with sand grit ● Epoxy or non-toxic polyester resin with sand grit ● Continuous liquid interface production (rapid prototyping ● material) 6 Mohammad
Designs Considered Resurfacing Process Possibilities: Automated Computer Numerical Control (CNC) machine ● Dip into liquid paint or surface texture ● Hot needle or 3D printer tip to created pores ● Remelt polyurethane into a new mold ● Ultrasonic Cleaner ● Sand Blaster ● Figure 5: Sandblaster Water jet ● 7 Dylan, Kyle
Design Challenges We need to limit our scope. To clean, resurface, and color holds will be difficult. Choosing a resurfacing method is difficult because we do not have test materials. 8 Abdullah
Scheduling 9 Mohammad
References [1] GoogleImages.com , 2017, i.ytimg.com/vi/1IihoA3e0Kw/maxresdefault.jpg. [2] “ Flagstaff Climbing Center.” Flagstaff Climbing , 2017, flagstaffclimbing.com/climbing-gym/. [3] Anon, (2017). [online] Available at: http://kepcoinc.com/downloads/Electro_Polishing/LC_surface-roughness-measurements.pdf [Accessed 02-Oct.-2017]. [4 ] “Polyester Climbing holds VS. Polyurethane,” Polyester Climbing holds VS. Polyurethane. [Online]. Available: http://www.climbingholds.org/. [Accessed: 02-Oct-2017]. [5]https://www.google.com/search?q=Continuous+liquid+interface+production&rlz=1C1GGRV_enUS759US760&so urce=lnms&tbm=isch&sa=X&ved=0ahUKEwjvjoq1wdPWAhVorlQKHZMbAwkQ_AUIDCgD&biw=1920&bih=984#im grc=gHIdztAnTYgBEM: (2017). [image]. [6] GoogleImages.com , 2017, Sandblaster+box&rlz=1C1GCEA_enUS765US765&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjxxKyitNPWAhWJ 7IMKHUkWChEQ_AUICygC&biw=1920&bih=984#imgrc=ExfyB-blKhIs5M.jpg. 10
Any questions? 11
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